Who can answer this last one for me ??!
Genetic variation among the gametes of one individual is most likely to
increase if crossing over
A. happens during meiosis I.
B. happens after meiosis II.
C. involves different species.
D. involves sister chromatids.
Answers
Answer:
A. happens during meiosis I.
Explanation:
In meiosis I, homologous pairs align independently on the equator. All possible combinations of chromosomes can occur among the gametes. Genetic variation is increased by crossing-over. (union of female and male gametes) produces random combinations.
Related Questions
Radioactive strontium (Sr) is harmful to humans. Strontium, when ingested by cows, can be introduced to milk through the process of replacing an element of the same group or family that has similar properties. Using the Periodic
Table, which element do you think can be easily replaced by strontium in milk?
Answers
Answer: K
Explanation:
Radioactive strontium (Sr) is harmful to humans. Strontium, when ingested by cows, can be introduced to milk through the process of replacing an element of the same group or family that has similar properties. potassium (k) element can be easily replaced by strontium in milk
What is radioactive material ?The radioactive material is a liquid, solid or gaseous which can be defined as the element containing radionuclides in concentrations .
These elements are more than the concentrations established as exempt by government authorities where Radioactivity is the emission of ionizing particles released by the disintegration of atomic nuclei.
This type of radioactive wastes are released in various industries through normal operations, flowing from facilities and environmental activities.
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HELPPPP:
Which statement is most accurate about the models atomic structure?
a) Carlos' model best shows the atomic makeup of the substances, the particles best show the difference between water and carbon dioxide.
b)Javiers' model best shows the particles of carbon dioxide and water.
c)Carlos' model best shows the differences between the two molecules, atoms, and elements are clearly labeled.
d) Javiers' model best shows the atoms of carbon, oxygen and hydrogen bonded differently
Answers
Which statement correctly compares electric charge with electric current?
D) They both require a human to make them.
A) Neither require charged particles.
B) They both require a battery and a bulb.
C) They both require a movement of charged particles.
Answers
Answer:
I think it's C
Explanation:
Answer:
Answer is C)
Explanation:
Not all electricity is generated by humans, a battery or bulbs... BOTH must have an electric current in order to be active
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most respiration occurs in oragnelles called
Answers
Answer:
mitochondrion
Explanation:
Which of these is part of the model's lithosphere?
OA. gravel
OB. earthworms
OC. grass
OD. seeds
Answers
A.) Gravel
What is an observation? What do you use to make an observation?
Answers
Answer: we can make observations directly by seeing, feeling, hearing, and smelling, but we can also extend and refine our basic senses with tools: thermometers, microscopes, telescopes, radar, radiation sensors, X-ray crystallography, mass spectroscopy, etc. And these tools do a better job of observing than we can!
True or false
The amounts of salt in ocean water is the same everywhere on earth?
Answers
Answer:
False
Explanation:
Different areas and seas have higher or lower salt levels
What are the environmental and economical
uses of soil?
Answers
Answer:
Agriculture
Soil has vital nutrients for plants. As a result, it is used in agriculture to nourish plants. The roots of a plant receive nutrients from the soil to help it grow. The North Carolina Department of Agriculture and Consumer Services notes that 13 essential plant nutrients come from the soil.
Building
Soil is an important part of the building process. Soil compaction, which increases the density of the soil, is done as part of the building process. The purpose of the compaction is to improve the load support. If not done, structural failure can result. Soil can also be used as building materials such as adobe and red bricks.
and i cant write an mor
What happens when two nitrogen atoms share electrons?
A. They form an oxygen molecule.
B. They form an ionic bond.
C. They form a water molecule.
D. They form a covalent bond.
Answers
Plants that use flowers for reproduction are called:
gymnosperms
eukaryotic
angiosperms
vascular
Answers
Explanation:
the answer of This question is angiosperms
What is an astronomical unit or AU?
A)
A unit of time equal to one light year or 6 trillion miles.
B)
A unit of distance equal to the average distance from Earth to the Suntor
93 million miles.
A unit of distance equal to the size of the Milky Way Galaxy or 100,000
light years across
D)
A unit of time that is equal to the amount of time it takes light to travel
from the Sun to Earth,
Answers
Answer:
B
Explanation:
The correct option should be B.
The Astronomical Unit, AU, is a measurement unit for length in general astronomy and represents the mean or the average distance of the sun from the earth.
Mathematically, in astronomy,
1 astronomical unit = 150,000,000 km
But then, 1 km = 0.621371 mile
Hence,
150,000,000 km = 150,000,000 x 0.621371 miles
≈93,000,000 miles
Therefore, 1 astronomical unit can also said to be approximately equal to 93,000,000 miles.
The correct option is B
Can someone please give me an explanation for Interphase and what happens in interphase?
I will mark brainliest
Please dont copy and paste
Answers
Answer:
In Interphase The cell grows in the (G1) phase, replicates DNA in the (S) phase
then prepares for mitosis in the (G2) phase. This all happens in Interphase. Hope this helps!
Explanation:
(GIVING BRAINLIEST!!!)
Pls help me! It should be very easy. The Lin k Is Below. Just copy and paste it.
Answers
Being genetically identical to the parent is most advantageous for organisms in which situation?
A.
Many offspring are needed in a very short amount of time.
B.
The environment is just like the one the parent lived in successfully.
C.
Mates cannot be found easily and the species is dying out.
D
The environment is changing and fast reproduction is needed.
Answers
Answer:
B
Explanation:
In asexual reproduction organisms give rise to genetically identical clones and reproduce in higher amounts, hence option d environment is changing and the need for fast reproduction is correct.
What is genetically identical?The children are clones of both the parent and each other. Asexual reproduction has several advantages, including the ability to fast increase the population when conditions are favorable.
There is just one parent required. During sexual reproduction, two people's genetic material is united to generate genetically diverse children who differ from their parents.
It is assumed that the genetic variety of sexually generated offspring gives species a higher chance of survival in an uncertain or changing environment.
Therefore fast reproduction is needed, because the environment is changing, and asexual reproduction makes a higher population, hence option d is correct.
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Which of the following best describes how scientists
can map out the locations of tectonic plate
boundaries?
A Scientists use aerial photography to see tectonic plate
boundaries.
B
Scientists are unable to map out the location of tec-
tonic plate boundaries.
С
Scientists can use satellite imagery to see tectonic plate
boundaries.
D
Scientists track where earthquakes have occurred most
frequently throughout history.
Answers
Answer:
B.Scientists are unable to map out the location of tec-tonic plate boundaries.
Explanation:
By plotting the locations of earthquakes, scientists have not only been able to locate plate boundaries but have also been able to determine plate characteristics and predict the movement of the plates. In this investigation, you will plot the locations of earthquakes and determine the boundaries of the earth's plates
Scientists are unable to map out the location of tectonic plate boundaries. So, the correct option is B.
What are Tectonic plates?A tectonic plate also known as a lithospheric plate is defined as a massive, irregularly shaped slab of solid rock that is composed of both continental and oceanic lithosphere. Plate size can vary from a few hundred to thousands of kilometers
By plotting the locations of earthquakes, scientists have not only been able to locate plate boundaries but they have also been able to determine plate characteristics and predict the motion of the plates. In this investigation we will plan the locations of earthquakes and determine the boundaries of the Earth's plates.
Thus, scientists are unable to map out the location of tectonic plate boundaries. So, the correct option is B.
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why is the sky red sometimes
Answers
Answer:
Because you're beautiful
Answer:
It is red when the sun is setting and the blue light is removed leaving red and yellow light
Explanation:
Please help!!
Does the amount energy from food eaten by each organism equal the amount of energy used but each organism?
Answers
Answer:
Ecosystem follows the 10% law.
Explanation:
The amount of energy that is available in the ecosystem is equal and same is equally distributed. Plants use solar energy and convert it into usable energy for processing food and water in tissues and reproduction and root development. Later on when the plant dies or is eaten up the dead organic matter is converted to energy that is derived by the herbivorous or primary consumer. When then (90%) lost through respiration and digestion, waste generation in the body. After which the energy left may be again taken up by some secondary consumer and only 10% energy remains while the rest is diffused in the ecosystem and environment. Thus energy is neither created nor destroyed but transformed in its form.dexter is doing a report on a prokaryotic organism. He has stated that this organism is unicellular and contains cytoplasm. Which organism could Dexter be writing about
Answers
Answer:
The correct answer would be - Archaea or bacteria.
Explanation:
All prokaryotic organism either archaea or bacteria both are unicellular organism that contain cytoplasm, genetic materia (DNA), ribosomes, plasma membrane, cell wall and no double membrane bound organelles such as nucleus or mitochondria.
These organism have no separation between cytoplasm and nucleoplasm and all genetical material is found inside the cytoplams itself. Archae and bacteria are two distinct domains of life that comes under prokaryotes.
Based on the law of conservation of matter, which
statement is true about a chemical reaction?
А
Mass stays the same.
B
Matter is created.
С
Matter is destroyed.
D
Matter in a reaction can never change states.
Answers
Answer:
a
Explanation:
Wolves living and hunting in packs is an example of:
A. Behavioral Adaption
B. Structural Adaption
C. Physiology Adaption
D. Hunting packs is not an adaption
Answers
Answer:
A.) Behavioral Adaption would be the answer!
Learning Task 6: Label the parts of the female reproductive system.
1.
2.
3.
4.
5.
6.
7.
8.
Answers
Answer: (Note: You will find the complete image in the attached files)
1. Fallopian tube
2. Uterus cavity
3. Bladder
4. Urethra
5. Ovary
6. Ovary
7. Uterus
8. Vagina
Explanation:
The vagina is a muscular tube-shaped connection that extends from the vaginal opening to the uterus. Vagina walls are very muscular, which allows contraction and expansion movements. It is located just between the urethra/bladder and the rectus. Menstruation, copulation, and birth occur through the vagina.
The uterus is a muscular and hollow organ, also located between the bladder and the rectus. The uterus wall is formed of three layers: perimetrium, mesometrium, and endometrium. This organ is separated into two parts: the uterus body and the cervix, which protrudes to the superior area of the vagina. Here is located the uterine opening that communicates the vagina with the uterus cavity. The final rounded portion is called "uterus fundus", and each of the two extremes is called "uterus horn". These horns are united to the Fallopian tubes.
Fallopian tubes are ducts that communicate each of the ovaries with each of the uterus horns. These tubes receive the oocytes that are getting out of the ovaries and carry them to the uterus. In their way, they might meet a spermatozoid and be fertilized.
Both ovaries have an oval shape, of approximately 3 cm in length each and 1 cm in width. They are located at each side of the uterus and are in charge of the production of the feminine gametes (the whole ovulation process).
3
7
TIME REMAINING
57:02
The graph shows tide heights from a location in Canada.
Based on the trend shown by the data, which prediction
can be made?
Tide Height in Bay of Fundy, CA
14
12
O After 10:48 p.m., the tide height will be less than 10
m.
O The next high tide height will be higher than 12 m.
O After 10:48 p.m., the tide height will continue to fall.
If the graph continued, the next line would go down.
10-
8-
Tide Height (m)
6
2
O
3:25 AM
3:48 PM
9:56 PM
Po 4:14 AM)
10:22 AM
4:39 PM
10:48 PM
Answers
Answer:
c
Explanation:
did the test
Down's syndrome is a condition where an extra chromosome is produced on the _____ chromosome.
Answers
Answer: On the Y chromosome
Answer: 21th
Explanation: Down syndrome a.k.a trisomy 21 because it’s caused by an extra copy of a chromosome 21.
Hope easy and helps! ^^
The three smaller components that make up atoms are -
A- neutrons, protons and ions.
B- neutrons, electrons and protons
C- protons, ions and electrons.
D- electrons, neutrons and ions.
Answers
Answer:
its b
Explanation:
but I have to make the explanation 20 words so imma write random things down here jdjdnkoskdndhjejsjsoosjssnjdjdjdjso
Plz help I need the answer
Answers
Answer:
pretty sure its C
Explanation:
because of the valence electrons
why is it beneficial for female peacocks to choose to mate with a male peacock with a full colorful trains?
URGENT
Answers
Answer:
Peahens often choose males for the quality of their trains -- the quantity, size, and distribution of the colorful eyespots. Experiments show that offspring of males with more eyespots are bigger at birth and better at surviving in the wild than offspring of birds with fewer eyespots.
True or False. Pepsin digests cellulose.
Answers
Answer:
true
Explanation:
Long ago, the tree of life was seen as having five branches.
True or False?
Answers
Answer:
false, hopefully iss right
What % of energy does plants receive from the sun
Answers
Answer:
Most solar energy occurs at wavelengths unsuitable for photosynthesis. Between 98 and 99 percent of solar energy reaching Earth is reflected from leaves and other surfaces and absorbed by other molecules, which convert it to heat. Thus, only 1 to 2 percent is available to be captured by plants.
Explanation:
Four substances are involved in both photosynthesis and cellular respiration. They are sugars, water, oxygen, and carbon dioxide. Describe what happens to these four substances during photosynthesis
Answers
Answer:
Explanation:
Photosynthesis is a light catalyzed chemical reaction that occurs in nature by all plants.
The process involves the reaction between carbon dioxide and water in the presence of sunlight.
This in turn produces glucose and oxygen gas.
The reaction expression is given as:
6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂
So, food is produced at the end of the reaction in form of glucose. In terms of energy, light energy is transformed into chemical energy stored in glucose.