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
Black_prince [1.1K]
3 years ago
8

What happens in crossing over? Why is it important for sexually reproducing organisms, and what is one of the consequences of er

rors in crossing over?
Biology
1 answer:
BaLLatris [955]3 years ago
3 0

Answer:

Crossing over increases the genetic variation  

Errors in crossover formation result in chromosomal rearrangements (duplications and deletions) and may also cause chromosome nondisjunction

Explanation:

Crossing over, also known as recombination, refers to the exchange of genetic material (DNA) between non-sister chromatids of homologous chromosomes during meiosis. Crossing over increases the genetic variation of the resulting gametes, allowing different genetic combinations to be passed from parents to offspring. Unequal crossing over is a type of error associated with chromosomal duplication and/or deletion events. Unequal crossing over occurs when homologous sequences are not paired precisely. Moreover, errors in crossing over may also cause chromosome nondisjunction, thereby leading to aneuploidies.

You might be interested in
Question 5 of 10
wlad13 [49]

Answer:

A

Explanation:

although they may evolve, done if the matter will remain the same.

4 0
3 years ago
What structures are present in a bacterial cell, but not in a plant or animal cell?
Inessa05 [86]
Prokaryote bacterium
4 0
2 years ago
State one way by which Carbon Dioxide increases in the atmosphere
weeeeeb [17]

Carbon dioxide is added to the atmosphere naturally when organisms respire or decompose (decay), carbonate rocks are weathered, forest fires occur, and volcanoes erupt. Carbon dioxide is also added to the atmosphere through human activities, such as the burning of fossil fuels and forests and the production of cement.

7 0
2 years ago
Read 2 more answers
_____ is 10 to 20 times higher inside the cell, and _______ is 10 to 20 times higher outside the cell.
wolverine [178]

Potassium is 10 to 20 times higher inside the cell, and sodium is 10 to 20 times higher outside the cell. The potential difference across the cell is important in several processes such as transmission of nerve impulses and maintain the ion balance.

The sodium concentration higher out side and potassium higher inside the cell then it moves two potassium into the cell where potassium levels are high and pump three sodium ions out of the cell and into the extracellular fluid.

This is due to action of membrane active transport system which pumps sodium out of the cell and potassium into it. Both helps in body maintain flid and blood volume so it can function normally.

To learn more about active transport system here

brainly.com/question/15454163

#SPJ4

5 0
2 years ago
What might happen if species a moved into a niche occupied b
Vlada [557]

Ans. (A).one species would be force to leave.

A niche is defined as a specific area, where an organism lives and interacts with all the abiotic and biotic factors that affect it.

Two organisms cannot survive in the exactly same habitat as they will compete for same resources, so one will die). Hence, one of the two competing species gets evolved to use a different niche and uses different sources. This is known as resources partitioning and helps the organisms to coexist by reducing competition between them.

Thus, the correct answer is option (A).

7 0
3 years ago
Other questions:
  • What was Rudolf Virchows contribution to the cell theory?
    8·2 answers
  • Mendel's law of independent assortment states that which allele is passed down to the next generation at one locus is dependent
    7·1 answer
  • Which of the following microorganisms is most likely to get its main source of nutrition from a host?
    14·2 answers
  • Can anyone pls help?!
    11·1 answer
  • Which layer of Earth’s mantle is the hottest?
    10·2 answers
  • Sixty-five million years ago, according to some scientists, an asteroid bigger than mount everest slammed into north america, wh
    7·1 answer
  • A food guidance system released by the usda that depicts five food groups using the familiar mealtime visual of a place setting
    12·1 answer
  • Number the events from earliest (1) to most recent (6) to outline the development of the cell theory.
    7·2 answers
  • Why is personal hygiene important for limiting the spread of diseases?
    6·1 answer
  • Which of the following is the MEDIUM for a flag blowing in the wind?
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!