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Tanzania [10]
3 years ago
7

during meiosis chromosome pairs randomly line up along each side of the cell equator this arrangement mixes up the chromosomal c

ombinations which help what?
Biology
1 answer:
drek231 [11]3 years ago
7 0

During meiosis, chromosome pairs randomly line up along each side of the cell equator. This arrangement mixes up the chromosomal combinations, which  

A. helps ensure reproductive success.  

B. helps create and maintain genetic diversity.

C. helps maintain all of the previous generation's characteristics.

D. helps ensure an equal number of males and females in the next generation.

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What gets passed from one cell to another in sexual reproduction
RoseWind [281]

Answer:

Cell division is the mechanism by which DNA is passed from one generation of cells to the next and ultimately, from parent organisms to their offspring. During meiosis, the cells needed for sexual reproduction divide to produce new cells called gametes.

8 0
3 years ago
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if a single species of squirrel evolved over time into 2 species, each on opposite side of the grand canyon, what is this change
-Dominant- [34]
On one side of the grand canyon could be a squirrel with a birth defect witch reproduses with a  squirrel with normal genes. But the birth defect is stronger than whatever trait that may be. so the litter of squirrels mostly have this trait. and the cycle contiues

6 0
3 years ago
Sister chromatids of a pair of homologous chromosomes form tetrads, and crossing-over (exchange of genetic information between r
aleksandr82 [10.1K]

Crossing over (exchange of genetic information between regions of non-sister chromatids in the tetrad) occurs in the prophase I stage of meiosis.

<h3>WHAT IS MEIOSIS?</h3>

Meiosis is the process whereby a single cell produces four daughter cells that are genetically different from one another.

Meiosis is able to ensure genetic diversity in the daughter cells due to a process called Crossing over.

Crossing over is the exchange of genetic material between the non-sister chromatids of homologous chromosomes. It occurs in the prophase I stage of meiosis.

Therefore, crossing over (exchange of genetic information between regions of non-sister chromatids in the tetrad) occurs in the prophase I stage of meiosis.

Learn more about crossing over at: brainly.com/question/394891

4 0
2 years ago
The karyotype indicates a problem with chromosome 18. What is the problem and what is the BEST explanation for why it occurred?
allochka39001 [22]

Answer:

C) extra chromosome; nondisjunction

Explanation:

3 0
2 years ago
What percent of energy is transferred between the levels indicated by the blue arrows?
ikadub [295]

Answer:

10%

Explanation:

Only around 10% of trophic energy is passed down to the lower level. This is because only about 10% of the energy is stored as biomass in one trophic level in general. This is called the 10% law.

4 0
2 years ago
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