1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Papessa [141]
3 years ago
13

What function does recombination by crossing-over have in genetic variation?

Biology
1 answer:
Katena32 [7]3 years ago
3 0

Answer: Crossing-over allows the genes that come from each parent to recombine before they are passed on to future generations because chromatids of homologous chromosomes mate and exchange sections of their DNA.

Explanation:

Chromosome crossing-over is the process by which chromatids of homologous chromosomes mate and exchange sections of their DNA during prophase I of meiosis, when pairs of homologous chromosomes, or of the same type, are aligned. The chromatids of the homologous chromosomes break off in the chiasmas and rejoin to allow recombination of the linked genes. So it occurs when regions at chromosome breaks mate and then reconnect to the other chromosome. <u>The result of this process is an exchange of genes, called genetic recombination</u>.

This allows the genes that come from each parent to recombine before they are passed on to future generations. Then, <u>it is an important source of genetic variability</u>, since it involves an exchange of segments between homologous chromosomes during the development of gametes. <u>This process allows that the descendants of an individual are genetically very different</u>, since it is very unlikely that an individual produces two equal gametes, because all of them have different segments of the homologous chromosomes.

You might be interested in
A toxin has been developed that specifically denatures respiratory enzymes found in the matrix of the mitochondria. What will ha
vredina [299]

Answer: Aerobic respiration will not take place and the animal will lose large amounts of ATP.

Explanation:

Mitochondria is the powerhouse that converts product of glycolysis that occurs in the cytoplasm into energy and release carbon dioxide as a byproduct. In the presence of oxygen (aerobic), products of glycolysis such as pyruvate enters the mitochondria, joins the kreb cycle and the electron transport chain yielding a large amount of energy or ATP.

Aerobic respiration that yield large amounts of ATP strictly occus in the mitochondrial matrix whereas anearobic respiration occurs in the cytoplasm.

7 0
3 years ago
The chemical equation below summarizes the burning of a fossil fuel.
algol13

Answer: B. Carbon Dioxide

Explanation:

Fossil fuel can release methane and other hydrocarbon. The reaction is processed between methane and oxygen in the air. When this reaction takes place the result is Carbon dioxide, water, and lots of energy (heat)

Hope this helps!

8 0
3 years ago
This rapid change in species that rarely leaves behind fossil evidence is referred to as
Deffense [45]

punctual equilibrium

6 0
3 years ago
Read 2 more answers
What factors contribute to parental care and mating choice? select all that apply?
Nitella [24]

The mating relationship amongst males and females differs significantly from species to species in many species, mating is uninhibited, with no strong pair-bonds or lasting relationships.  Foregone conclusion of paternity influences parental care and mating behavior.  Mating behavior includes seeking or attracting mates, choosing among potential mates, competing for mates, and caring for offspring

5 0
3 years ago
Read 2 more answers
Changes to an ecosystem’s biodiversity can have a direct effect on humans because humans –
weqwewe [10]

Answer:

The answer should be D.

3 0
3 years ago
Other questions:
  • Which is not an example of a renewable source
    13·1 answer
  • Which of the following would be an individual effort to reduce air pollution? the Clean Air Act of 1970 building a carpool lane
    14·2 answers
  • The Doppler effect suggests that sound waves are relative to the observer. You know if an object is coming or going from the sou
    8·2 answers
  • #31 , which of the following is a carbohydrate?
    11·2 answers
  • When does gametogenesis occur
    14·2 answers
  • You are a molecule of water. Choose a starting point in the water cycle and describe the process you would go through to move th
    9·1 answer
  • How do plants use nitrogen?
    15·1 answer
  • The Piney Woods ecoregion in Texas receives more than 50 inches of rain each year and is home to many different species of plant
    13·2 answers
  • Areas of the Earth near the equator receive large amounts of solar energy. How does this lead to increased rainfall?
    12·1 answer
  • Write a short paragraph on the hearing and seeing capacity of a horse​
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!