Answer:
the cause of variation are
mutationrandom fertilizationrecombination between homologous chromosomehope it helps.
Determine the genotype of the offspring that belongs in the box with the question mark (?)
PLZZZ ANSWER ILL GIVE 30 PTS AND BRAINLIEST
a population of animals is split in half by a river before speciation is completed the two halves are rejoined when a drought causes the river to run dry how would this impact the two populations
A. speciation would still occur because the two halves would be too different genetically to interbreed.
B. traits that had developed through mutation would still exist only in one of the halves.
C. the two halves would be reproductively isolated.
D. individuals could now freely mate, and gene flow would increase. (this took so long to write please clap)
Answer:
D. Individuals could now freely mate, and gene flow would increase.
Explanation:
Since genes/traits are passed on from parent to offspring the gene flow would definitely increase. Since the population of animals is now brought back together by the drought, they now have more mates resulting in more and different genes combining. Therefore, the gene flow would increase.
I hope this helps! :3
Scientists are uncertain about how life began on Earth.
Why?
Which of the following best describes Growing Degree Day total?
A. a measure of the amount of heat needed to encourage plant growth
B. a measure of the amount of heat a plant is exposed to over a single day
C. a measure of the amount of heat a plant must experience before reaching maturity
D. a measure of the amount of heat tolerance a plant demonstrates
Answer:
C.a measure of the amount of heat a plant must experience before reaching maturity
Which term is associated with asexual reproduction but not sexual reproduction
fission is asexual and only asexual
Answer:
no its fertilization
Explanation:
pollination is an external process. why?
Answer:
It requires agents to carry the pollen anther to stigma.
Explanation:
Can you PLEAZE answer these fast
Answer:
It’s blurry
Explanation:
Answer:
Number 1 Blank Is "Virus"
Number 2 Blank Is "Vaccine"
Number 3 Blank Is "Flu"
Number 4 Blank Is "Pandemic"
Number 5 Blank Is "Severe"
During meiosis, homologous chromosomes line up next to each other. In some
cases, one arm of a chromatid crosses over the arm of another chromatid. What is
the result of this process?
the independent assortment of genetic material
the creation of an additional sex cell
continuity in the offspring cell's DNA
additional variation in the DNA of each sex cell formed
Crossing over is a mechanisms involved in introducing genetic variation. When the arm of a chromatid crosses over the arm of another chromatid, it results in additional variation in the DNA of each sex cell formed. Option D.
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Crossing-over between homologous chromosomes (prophase 1), the random lining of homologous chromosomes (metaphase 1), and random fertilization are the mechanisms involved in genetic variation.
The Crossing-over events occur between two homologous chromosomes in the equatorial plane and make the daughter cells genetically different from the original one.
The Chiasma is the position where two homologous chromatids interchange genetic information, giving a place for new genetic material or information to be provided to descendants.
After crossing over, homologous chromosomes get separated again.
So, according to this information, when the arm of a chromatid crosses over the arm of another chromatid, it results in additional variation in the DNA of each sex cell formed.
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https://brainly.com/question/12911831?referrer=searchResults
what was one problem the printing press fixed
In the case of a tick feeding off a deer, the deer would be considered _____ and the tick would be considered _________.
Answer:
The tick would be considered a parasitism and the dear would be considered a prey
Explanation:
i Hope this helps
True or False? Plants are key in the Carbon Cycle. Plants take in O2 and release CO2 into the Atmosphere.
Answer:
FALSE
Explanation:
They are key in carbon cycle, because CO2 an breathe out 02 ,while humans do the reverse of what they do
Suggest two ways that this type of farming can damage the environment?
Explanation:
Factory farming intensifies climate change, releasing vast volumes of greenhouse gases. Factory farming is fuelling climate change, releasing vast quantities of carbon dioxide and methane.
T
C
G
C
G
C
T
T
A
T
A
T
A
G
C
T
C
G
T
T
T
A
T
C
A
C
C
Answer:
Wow felt
Explanation:
hey could someone help me with this immediately!!! i’ll mark brainiest if u don’t guess or leave a link!!
What would happen if the American bullfrog went extinct? NO LINKS!!!!!!!!!!!!!!!!!!
Answer: The death of frogs would send a ripple through the ecosystem. The number of animals that eat the frogs will die off, then the animals that eat them will go hungry, and their populations will be devastated as well. This would just keep going up the food chain
Explanation:
Invasive bullfrogs upset the balance of predator-prey interactions and competition for food and shelter, but they also may be worsening another ecological disaster in the amphibian world. ... The invasive American Bullfrog can act as a vector, harboring this fungus, with no ill effects, and spread it to other amphibians
hopefully this helps :)
Fill in the missing words : Rock, Temperature, Pressure, Freeze-Thaw, Onion- Skin, Acid Rain, Limestone, Plants, Animals, Expand, Weakens, Eroded, Transported, Wearing Away, Water, Ice, Wind
The Earth is made up of many different types of _ _ _ _. A landscape can be made up of more than one rock type.
Physical weathering is caused by changes in _ _ _ _ _ _ _ _ _ _ _ or _ _ _ _ _ _ _ _. There are 2 main types of physical weathering: _ _ _ _ _ _- _ _ _ _ (takes place when water is trapped in the cracks of rocks and freezes. The frozen water expands and enlarges the cracks in the rocks) and _ _ _ _ _- _ _ _ _ (takes place in hot desert climates. Changes in temperature cause the surfaces of the rocks to expand and contract which causes thin layers of rock to peel off!).
Chemical Weathering occurs when _ _ _ _ _ _ _ _ attack and break down rock surfaces. _ _ _ _ _ _ _ _ _ is weathered in this way.
Biological weathering involves _ _ _ _ _ _ and _ _ _ _ _ _ _ . Plant seeds can begin to grow in the cracks of the rocks. As the roots _ _ _ _ _ _ the cracks in the rock expand, the rock _ _ _ _ _ _ _ and pieces break off!
Once rocks have been broken down they may be _ _ _ _ _ _ and/or
_ _ _ _ _ _ _ _ _ _ _. Erosion is the _ _ _ _ _ _ _ _ _ _ _ of the land by _ _ _ _ _, _ _ _ or _ _ _ _.
Rock, Temperature, Pressure, Freeze-Thaw, Onion- Skin, Acid Rain, Limestone, Plants, Animals, Expand, Weakens, Eroded, Transported, Wearing Away, Water, Ice, Wind
Is correct ???? I need help :(
Answer:
i think its right but maybe get a second opinion
Explanation:
In which domain would you place the kingdom archaebacteria?
Answer:
Explanation:
The kingdom you would put archaebacteria is the kingdom called archaebacteria
What are the major functions of the male and the female reproductive systems?
NO LINKS
Answer: These organs do the following jobs within your body: They produce, maintain and transport sperm (the male reproductive cells) and semen (the protective fluid around the sperm). They discharge sperm into the female reproductive tract. They produce and secrete male sex hormones. The human reproductive system functions to produce human offspring, with the male providing sperm and the female providing the ovum.
Explanation:
Answer:
Male:
Penis testicals sperm semen.
Female: Vagina uterus fallopian tubes ovaries
Explanation:
Four different samples of the same kind of matter that all started at a temperature of 20 °C had differen
amounts of energy transferred to them and ended up at different temperatures.
Number the sample descriptions from 1-4 with 1 being the greatest amount of energy absorbed and
4 being the least amount of energy being absorbed
Analyzing which form of data provides the most detailed information for classifying species?
Answer: c molecular sequences. brainliest??
Explanation:
Does anyone know how to figure the difference between dry bulb and wet bulb temperature and also relative humidity
A wet bulb will bust if The bulb itself is hot. a dry bulb won't.
Which statement describes the process of finding a mineral's streak?
A. When you strike it against gypsum, it leaves a scratch.
B. When you examine its surface, it looks like dull metal.
C. When you drop a piece of it in acid, a smoky gas is produced.
D. When you rub it on a white tile, it leaves a black mark.
SUBMIT
Answer: When you rub it on white tile, it leaves a black mark
Explanation:
Answer:
D
Explanation:
The picture is Groove in a cliff
What process does a multi-cellular organism use to replace its damaged body cells
Answer: mitosis.
Explanation:
where are fossil fuels found?
in the air
in the earth
in trees
in animals
in the earths crust, so in the earth
Hope this helped :T
An organism called euglena is represented by the diagram. The euglena can be classified as eukaryotic due to the presence of which
labeled part?
Euglena
Part A which allows the cell to turn sunlight into food
Part B. which allows the cell to move itself from place to place
Part C, which is centrally located and stores genetic material
Part D, which allows the organism to store water
Answer:
D. which allows the organism to store water
¿Qué estructuras y organelas son exclusivas de las células eucariotas vegetales?, ¿cuáles son las funciones de cada una?
Answer:
Las estructuras y organelas que son exclusivas de las células eucariotas vegetales son: la pared celular, los cloroplastos, las vacuolas y los plastidios. Cada una de estas estructuras tiene distintas funciones.
Explanation:
Las células eucariotas vegetales tienen otro tipo de estructuras y organelas ya que tienen otro tipo de procesos, entre los cuales se encuentra la fotosíntesis.
Funciones:
Pared Celular: protege la membrana plasmática y toda la estructura celular. Tiene plasmodesmos a través de los cuales ingresan sustancias.
Vacuolas: almacenan sales, agua y productos residuales
Plastidios: le dan distintas características a las plantas. Algunos almacenan sustancias, otros definen su color.
Cloroplastos: son un tipo de plastidios y tienen un pigmento llamado clorofila.
Identify which of the following will easily pass through the membrane? A.) Protein Hormone B.) Steroid Hormone C.) Charged Ion D.) Water
Answer:
Hope this helps a bit, sorry if it doesn't. Have a good day/night! :}
Explanation:
Steroid Hormone: It is thought that, because of their lipophilic nature, free steroid hormones enter target cells primarily by passive diffusion through the cell membrane. After gaining entry to the cell, steroid hormones act as ligands for nuclear receptors and alter gene transcription
Protein Hormone: Small uncharged molecules can diffuse freely through a phospholipid bilayer. However, the bilayer is impermeable to larger polar molecules (such as glucose and amino acids) and to ions. These molecules pass across membranes via the action of specific transmembrane proteins, which act as transporters.
Water/Ion: Small polar molecules, such as water and ethanol, can also pass through membranes, but they do so more slowly. On the other hand, cell membranes restrict diffusion of highly charged molecules, such as ions, and large molecules, such as sugars and amino acids.
A substance that will easily pass through the membrane is: B. steroid hormone.
What is a membrane?A membrane can be defined as the thin layer that separates the ineterior of a living cell from another, especially by forming its outer boundary or layers.
This ultimaetly implies that, a membrane provides protection for a living cell or an internal cell compartment from its environment.
In conclusion, a steroid hormone is a substance that will easily pass through the membrane.
Read more on membrane here: https://brainly.com/question/734740
When limiting factors exhibit pressure on a population, what happens to the growth graph?
Answer:
Anything that limits carrying capacity = exhibits pressure on a population
These include:
- food resources
- shelter
- population density (space)
- predation
What happens to the growth graph is that it starts leveling off and not growing at as fast of a rate. It fluctuates around the carrying capacity, k. Look at a logistic population model for more info, and your growth graph will resemble exactly that