Homologous chromosomes may exchange segments; this is called crossing over. Crossing over increases genetic variability. When do

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2 years ago

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Homologous chromosomes may exchange segments; this is called crossing over. Crossing over increases genetic variability. When do

es crossing over occur?
Question 2 options:

Meiosis II

Mitosis

Both mitosis and meiosis--crossing over may occur at any time during the cell cycle.

Meiosis I

Question 3

In order for meiosis to create four, genetically different gametes, DNA replication must occur. Which of these best describes when DNA replication would occur?

Question 3 options:

prior to meiosis II

prior to meiosis I and meiosis II

prophase I in meiosis I

prior to meiosis I

Question 4 (1 point)
The embryo's development as seen here represents which processes in the development of any multicellular organism?

Question 4 options:

meiosis followed by mitosis.

mitosis and cell differentiation.

protein synthesis followed by meiosis.

meiosis and cell differentiation.

Question 5
Why do some organisms reproduce aseggsually?

Question 5 options:

To rapidly produce like offspring

To increase genetic diversity

To have a variety of offspring at the same time

To get rid of genetic problems while reproducing

Biology

1 answer:

Serhud [2] · Answer 1 · 2023-01-17T15:59:49+03:00

A) Crossing over occurs in : Meiosis I ( D )

B) DNA replication would occur : Prior to meiosis I and meiosis II ( B )

C) The embryo's development represents ; meiosis and cell differentiation ( D )

D) Some organisms reproduce aseggsually ; To rapidly produce like offspring

<h3>What is Crossing over and DNA replication</h3>

Crossing over involves the swapping of genetic materials, and it occurs in prophase I of meiosis before meiosis II the crossing over of genetic materials are over. while DNA replication is the process whereby DNA make an exact copy of itself during the process of cell division and this process occurs prior to meiosis I and meiosis II

The development of an embryo in the missing diagram represents meiosis and cell differentiation.

Hence we can conclude that the answers to your questions are as listed above.

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