Many male birds will expend A great deal of energy building nests. Females will mate with the males who build the best nest. This is best described as an example of ___.
a) natural selection
b) sexual selection
c) runaway selection
d) an invasive species
e) disruptive selection
Answers
Answer:
B
Explanation:
Female birds mate with the males who build the best nest is the example of option b. sexual selection.
Sexual selection is a mode of natural selection in which one sex members choose the mate with the member of the other sex for mating.
These members of the biological sex prefer opposite sex members for species-specific characteristics in individuals of the other sex such as best building nest in birds. Other male birds compete with members of the same sex to get selected by members of the female birds in this instance.Thus, the correct answer is option b. sexual selection as female birds prefers species-specific traits to select their mating partner by best nest building by males.
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Related Questions
Indicate which of the following statements is TRUE. Group of answer choices Covalent bonds connect nucleotides in a strand; noncovalent interactions hold strands into a double-stranded structure. Uracil is similar to thymine except that uracil lacks a methyl group on the carbon at position 5 on the carbon-nitrogen ring. Frederick Griffith demonstrated that a transforming chemical from dead bacteria could change the genetic information of living bacteria. The pyrimidine bases in nucleic acids are cytosine, thymine, and uracil. All of the above statements are true.
Answers
Answer:
The answer is "All of the above statements are true".
Explanation:
In the given-question all choices were true, which can be defined as follows:
The covalent bonds are linked to a range of nucleic acids. Non-covalent encounters involve a dual washed ashore system. The Uracil is just the same as pyrimidines, except that at position 5 throughout the carbohydrate ring it lacks in the methyl group in carbon. Frederick-Griffith proved a possible change throughout the genetic material of bacterial cells with both the morphing chemical from dead bacterial cells. Cytosine, thymine, and uracil are pyrimidine fundamentals in nucleic acids.Plant roots are more easily able to absorb ammonium that has been produced from ________.
A. nitrification
B. nitrogen fixation
Answers
The combination of chemical reactions that make up an organisms help to organize raw materials into living matter
Answers
Answer:
Metabolism
Explanation:
What is meant by crop rotation?
Answers
Answer:
Crop rotation is the practice of growing a series of different types of crops in the same area in a sequence of growing seasons.
Explanation:
It reduces reliance on set of nutrients.
Hope it helps.
What are the physical characteristics that all specimens have in common
Answers
2. All living organisms, weather single called or multicellular, expand energy.
3. We all grow and change through the process of cell division or mitosis.
4. Reproduction (either sexually or asexually) - this allows our species to still exist.
5. Adaptation - we all adapt to an environment other species can’t.
The physical characteristics that all specimens have in common can be presence of cells, as there is no specimen given, let's take animals. A dichotomous key can be used to find the similarity.
What is a specimen?A specimen can be anything that is displayed regarding the subject. In labs the specimens can be chemicals, animals, plants, any objects, etc.
Specimens are displayed to learn about them, to see the actual version of that animal that can not be seen easily.
Thus, Because no specimen is provided, let's take animals as an example, the presence of cells is a trait that all specimens share. To find the similarity, a dichotomous key might be utilized.
Learn more about specimens
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A teacher collected some
beetles from a rotting log
and placed them in a
container of dry oatmeal in
her classroom. She kept the
box covered with a light cloth
so that the beetles could not
escape. She also asked one
of her students to add
potato and apple pieces
once a week to provide food
and moisture for the beetles.
After several weeks, the
student reported that there
were some strange-looking,
wormlike organisms in the
container
Answers
Answer:
beetle larva
Explanation:
Independent and Dependent Variable Practice
DIRECTIONS: Read the information about each experiment and record the independent variable (IV) and dependent variable (DV). Then write a hypothesis for each experiment. Be sure to use an “if, then, because” statement.
Will an egg float higher in water with more salt?
IV:
DV:
Hypothesis:
Willy and Billy want to know if stretching a rubber band at different lengths affects how far the rubber band will fly. They will use centimeters for all measurements.
IV:
DV:
Hypothesis:
Will a paper airplane with longer wings fly farther than shorter wings?
IV:
DV:
Hypothesis:
Will a plant grow higher with more light?
IV:
DV:
Hypothesis:
Milly and Bob want to know if the amount of baking soda added to vinegar will affect the height a rocket will launch. They will measure the baking soda in milliliters. They will measure the height of the rocket launch in meters.
IV:
DV:
Hypothesis:
Carrie and Heather wanted to know if the size of a coin will affect the number of drops of water it can hold. So they use a dropper to place water on a quarter, nickel, and penny.
IV:
DV:
Hypothesis:
I wonder if the amount of studying I complete has an effect on my science test scores?
IV:
DV:
Hypothesis:
Answers
Answer:
1) IV: The quantity of salt added
DV: The resultant density of the salinated water
Hypothesis: The egg will float when the mass of the volume of the salinated solution displaced by the egg is equal to or larger than the mass of the egg
2) IV: The extension of the rubber band above original length in centimetres
DV: The distance flown by the rubber band
Hypothesis: The potential energy stored in the rubber band by pulling will be transformed into kinetic energy and the larger the extension, the larger the stored potential energy, and the larger the resultant kinetic energy, the higher the velocity and the further the distance flown
3) IV: The wing span of a paper airplane
DV: The distance flown by the plane
Hypothesis; The glide of the airplane is a factor of the wings span increased wingspan increased glide and increased travel distance
4) IV: Presence of more light
DV: Height to which plant grows
Hypothesis: Photosynthesis, which is the conversion of carbon dioxide and water into glucose and oxygen in the presence of Sunlight is essential for plant growth and the more the presence on light is increases the higher plant will tend to grow
5) IV: Amount of vinegar in the canister
DV: The height a rocket will launch
Hypothesis: With a given amount of baking soda, in the canister a little amount of vinegar causes a delayed launch but an increased build up of carbon dioxide resulting in higher height reached than when more vinegar is used in which case the lift off will be more rapid but the power will be lesser and the height reached reduced
6: IV: Surface area of the coin
DV: The number of drops held
Hypothesis: Due to surface tension and cohesion which are properties that increase with surface area and as such a coin with a larger surface area holds more water drops
7. IV: Number of hours of study
DV: Science score
Hypothesis: A student science scores is directly related to the amount of science topics thought the student is able to respond to in a test and it is directly proportional to the amount of study the student has done related to the science topics
Explanation:
Convert 90 centuries to minutes using the method of dimensional analysis.
Answers
[tex]\huge\text{Hey there!}[/tex]
“[tex]\large\text{Convert 400 mm to m}[/tex]”
[tex]\large\text{Just simply divide 400 by 1,000 and you will have your result.}[/tex]
[tex]\mathsf{\dfrac{400}{1,000}}[/tex]
[tex]\mathsf{= \dfrac{400\div200}{1,000\div200}}[/tex]
[tex]\mathsf{400\div 200 = \bf 2}[/tex]
[tex]\mathsf{1,000 \div 200 = \bf 5}[/tex]
[tex]\mathsf{= \bf \dfrac{2}{5}}\rightarrow\mathsf{\bf 0.4}[/tex]
[tex]\boxed{\huge\textsf{Therefore, your ANSWER is: \boxed{\bf \dfrac{2}{5} \ or \ 0.4}}}\huge\checkmark[/tex]
[tex]\huge\text{Good luck on your assignment \& enjoy your day!}[/tex]
~[tex]\frak{Amphitrite1040:)}[/tex]
a pupil performed an experiment in a school lab to show the action of a digestive enzyme on a food substance
a) Name and enzyme suitable for such an experiment
b) Name a food substance on which the enzyme that you have named will act
c) Describe any preparation of the food required before the experiment is performed. If no preparation is required state why?
d) give the temperature at which the enzyme-food mix should be maintained for the experiment to work
e) how much time is needed for digestion of food in this experiment?
f) describe a test to confirm that digestion has occurred
Answers
If a vaccine protects you for most of your life against a particular pathogen, why do you need a new flu shot every year? A. Influenza evolves very quickly and its antigens mutate so that your memory cells from the last vaccine won’t recognize it. B. Influenza is so strong that you need a booster every year to make sure your body can fight it. C. Influenza is a virus, and vaccines only generate memory cells for bacterial infections. D. You don’t need it every year, it is just offered every year for anyone who does not have it yet.
Answers
Answer:
If you got a flu shot this year, next year you'll need it again.
Explanation:
This is because the virus changes, usually rendering the previous year's vaccine partly or totally useless. hope this helps you :)
Answer:
A.
Explanation:
Influenza evolves very quickly and its antigens mutate so that your memory cells from the last vaccine won’t recognize it.
The 2020 influenza vaccine was not as efficient because scientists were scrambling to put out a vaccine for Coronavirus. Consequently, Coronavirus cases skyrocketed during the flu season.
Hope this helped!
also.. i have to put coronavirus and not "c0vid-19" because apparently it's too political. lol.
The arrangement of leaves on a tree branch that reduces overlapping and overshadowingof leaves from sunlight is referred to as leaf …………………………………………………………This ensures exposure of most of the leaves to sunlight for maximum ……………………………………………..to take place in the ………………………………………………………………………of leaf cells. The grana contains numerous……………………………………………molecules which trap light………………………………….for ………………………………………………….of water, producing ………………………………………atoms required for the process of carbon (IV) oxide…………………………………………………………in the light……………………………………………………………stage of photosynthesis which takes place in the……………………………………………..of the chloroplast.
Answers
Answer:
phyllotaxy
photosynthesis
chloroplasts
chlorophyll
energy
oxidation
oxygen
reduction
independent
stroma
Explanation:
The arrangement of leaves that provide maximum exposure to sunlight is referred to as leaf phyllotaxy that reduces overlapping and overshadowing of leaves and supports maximum photosynsthesis.
The contains numerous chlorophyll molecules that trap the light energy for the oxidation of water and producing oxygen (O2) atoms required for carbon (IV) oxide reduction in light-independent, which takes place in the stroma of the chloroplast.
Hence, the correct answer in a sequential manner is as follows:
phyllotaxy
photosynthesis
chloroplasts
chlorophyll
energy
oxidation
oxygen
reduction
independent
stroma
6. If the time period were extended to 6 hours, what would be the expected blood sugar level for
Person B?
Answers
According to the graph, the blood sugar level for person B is 130 mg/dL after 6 hours of eating meal.
The blood sugar level is highest just after eating the meal but with the passage of time, the concentration of blood sugar level decreases due to absorption by the body. One hour after eating the meal, the blood glucose level is slightly decreases but after 6 hours, the blood glucose level tends to very low due to more consumption of the body or storing by the body in different parts.
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What is a defining feature of mammals that is not present in most other vertebrates?
A. Mammals can produce milk for their offspring.
B. Mammals maintain a constant body temperature.
C. Mammals reproduce through internal fertilization.
D. Mammals have a nervous system with a spinal cord.
(Pls I need help!)
Answers
Answer:
The correct answer is C. Mammals can produce milk for their offspring.
Mammals are the members of class mammalia. The word mammalia was derived from Latin word "mamma" which means "breasts" as they had a unique feature i.e. presence of mammary glands.
These glands were evolved from a special types of sweat glands and became specialized in the production of milk, especially in females.
They help the mothers in providing nourishment to the offspring.
Other features of mammals may include four chambered heart, hair and fur, three middle ear bones, etc.
Explanation:
¿Qué significa que un gen se exprese?: I. Que se hagan copias de él en forma de ARNm. II, Que se posibilite la síntesis de proteínas. III. Que genere características visibles.
Answers
Answer:
kelfwk 8,,t4
nfdhfku r
Explanation:
please help me out, name all 3 parts of the atom.
Answers
2. Neutron
3. Electron
In the atom, the arrow 1 depicts the proton. The arrow 2 depicts the neutrons, and the arrow 3 depicts the electrons. All three of these are subatomic particles.
What is an atom?An atom is the fundamental structural unit of matter. It consists of protons, neutrons, and electrons. Electrons are negatively charged particles that are present outermost shell of the atom, while protons are positively charged particles that make up the core of the atom. The neutron doesn't have any charge.
Both neutrons and protons make up the core of an atom, while electrons revolve around them. A neutral atom has equal numbers of protons and electrons. Example: the sodium atom.
Hence, the atom showing arrow 1 is a proton, arrow 2 is a neutron, and arrow 3 is an electron.
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Neuron A communicates with neuron B. The ________ of neuron A releases a signal that activates a(n) ________ of neuron B.
Answers
Answer:
Axon terminal ; dendrite
Hope this answer correct :)
Neuron A communicates with neuron B, and the axon terminal of neuron A releases a signal that activates the receptors present on neuron B. The neurotransmitters are attached to the ligand-gated channel on neuron B.
What is nerve impulse transmission?The nerve impulse transmission takes place between two neurons, and then in this way, from the sensory organs, the message passes to the spinal cord and the brain. The synapse is formed between the two neurons, such as the presynaptic neuron that releases the neurotransmitters, and this activates the ligand-gated channel of the postsynaptic neuron. Due to this interaction, the neurons get excited and activated.
Hence, neuron A communicates with neuron B, and the axon terminal of neuron A releases a signal that activates the receptors present on neuron B. The neurotransmitters are attached to the ligand-gated channel on neuron B.
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What does "the process of making more of the same producing offspring" called?
Thanks..
Answers
Why are the testes located in the scrotum rather than inside the ventral body cavity? _______________________________
Answers
Answer:
the scrotum provides a slightly cooler temperature for optimal sperm production
Explanation:
In South America, huge areas of tropical forests are being cleared. The wood is sold and crops such as coffee are planted instead.
a) Give two reasons why this damages the global environment.
b) Suggest two ways of limiting the damage to the forests.
Answers
a) Give two reasons why this damages the global environment
Humans impact the physical environment in many ways: overpopulation, pollution, burning fossil fuels, and deforestation. Changes like these have triggered climate change, soil erosion, poor air quality, and undrinkable water.b) Suggest two ways of limiting the damage to the forests
reinforcing and expanding forest protected areas; and adopting agroforestry, afforestation and reforestation and sustainably managing existing planted forests to meet demand for wood, thereby reducing pressure on natural forests.HOPE SO IT HELPS YOU
Which statement most accurately describes what the medicine bag symbolizes to Martin’s grandpa? It symbolizes his connection to his family members and his way of life. It symbolizes his hope that Martin will one day live on the reservation. It symbolizes the sacred dream he had during his vision quest. It symbolizes the deer that his father had killed long ago.
Answers
Answer:
A
Explanation: family members
Answer:
A
Explanation:
Which cells contain chloroplasts?
A:cells in plant leaves
B:cells in plant roots and stems
C:cells in animal muscles
D:cells in animal brains
Answers
Answer:
cell in plant's leaves
Explanation:
cell in plant's leaves
Answer:
A:cells in plant leaves
Explanation:
Chloroplasts are located in the leaves of plants,which contains chlorophyll.This aids in photosynthesis.
I hope this helps :)
Why is mitosis important to all living things?
Answers
Answer: It's important because mitosis helps living things grow and replace old or damaged cells.
Determine the correct sequence of events for the production of a human protein in a bacterium. I. Target gene is inserted into a plasmid II. Bacterium replicates in a fermenter III. Bacteria produces target protein IV. Modified plasmid is inserted into bacterium
Answers
Answer:
I. Target gene inserted into plasmid
IV. Modified plasmid is inserted into bacterium
II. Bacterium replicates in a fermenter
III. Bacteria produces target protein
how does root pressure move water
Answers
Answer:
Root pressure is caused by the accumulation of water in the xylem pushing on the rigid cells
You watch a scientist dissolve some sugar in a liter of water and then place some of this solution into a dialysis bag, tying both ends shut. The she places the bag into a beaker of distilled water. What word best describes the solution outside of the bag?
Answers
Answer:
shoulda used ziploc?
Explanation:
Answer:
Hypotonic
Explanation:
When sugar is dissolved into the water, it adds molucules, making the water have a higher concentration. If you have a semipermable membrane between the two, it would create a process called osmosis. The hydrogen bonds would all go to the side with the higher concentration side, also known as the hypertonic side. The side with less bonds would be called the hypotonic side.
Vaccines contains
1 point
the antigen of a pathogen
the antibody of a pathogen
the DNA of a pathogen
the DNA of human cells
Answers
Answer:
the antigen of a pathogen
Match the current applications to the appropriate branch of genetics. Not all applications will be placed.
a. Hereditary genetics
b. Population genetics
c. Molecular genetics
1. Observing phenotypes in offspring to understand gene inheritance.
2. Tracing pedigrees to determine patterns of gene transmission within a family.
3. Calculating allele frequencies to determine changes within gene pools.
4. Expressing exogenous transgenes to understand function.
5. Identifying gene mutations associated with a genetic disease.
Answers
Answer:
a. Hereditary genetics = 1 and 2
b. Population genetics = 3
c. Molecular genetics = 4 and 5
Explanation:
Genetics is a discipline that studies the transmission of heritable traits from parents to offspring. Population genetics is a discipline that analyzes genetic and allele frequencies in natural populations, as well as their changes in evolutionary processes. Finally, molecular genetics is a research field that studies the structure of the DNA molecule, its replication and the development of genetic engineering technologies associated with the manipulation of genetic information.
a. Hereditary genetics = 1 and 2
b. Population genetics = 3
c. Molecular genetics = 4 and 5
The following information should be considered;
Genetics refers to a discipline that studies the conversion of heritable traits from parents to offspring. Population gen-etics should be the discipline that analyzes genetic and all-ele frequencies in a natural populations along with it their changes in evolutionary processes. So, molecular gen-etics means the research field that studies the DNA structure molecule, its replication and the development of gen-etic.learn more: https://brainly.com/question/3617478?referrer=searchResults
A bumblebee carries pollen from the male portion of a plant to the female portion of the same flower. Fertilization occurs. Which statement is true about this type of reproduction?
A.
It’s asexual, and the offspring are genetically identical to the parents
B.
It’s sexual, and the offspring are genetically identical to the parents.
C.
It’s asexual, and the offspring are genetically different from the parents.
D.
It’s sexual, and the offspri
Answers
Answer:
U R (A)sexual
Explanation:
If you see my dear, the answer will be A because it is not sexual (just like you lol) the offspring will be genetically similar to the parent, which you probably are not, you are adopted :)
Which muscle tissues in the body are going to have the high number of Mitochondria and why?
Answers
Answer:
Skeletal muscle cells are long, cylindrical, multi-nucleated and striated. Each nucleus regulates the metabolic requirements of the sarcoplasm around it. Skeletal muscle cells have high energy requirements, so they contain many mitochondria in order to generate sufficient ATP.
Identify the error in the following statement: “Photosynthesis is a chemical
reaction that takes place in the chloroplasts of green plant cells, where chemical
energy is used to convert carbon dioxide and water into glucose and oxygen."
A. No errors
B. "water" and "oxygen" should be switched
C. "chemical" should be "light"
D. "chloroplasts" should be "mitochondria"
Answers
Answer:
It is 'C'
Explanation:
The chemical reaction that occurs in the chloroplast is:
6CO₂ + 6H₂O → C6H₁₂O₆ + 6O₂
The electromagnetic energy of sunlight is converted to chemical energy in the chlorophyll-containing cells of photosynthetic organisms. The granum stores the photon particles from light and converts its energy into chemical energy to convert carbon and water into glucose and oxygen.
Answer:
c
Explanation: