Since the goal of making haploid gametes is to create cells with only one full set of chromosomes instead of two sets, why don't diploid cells just have to divide once to get to that point during meiosis?

Since the goal of making haploid gametes is to create cells with only one full set of chromosomes instead of two sets, why don't diploid cells just have to divide once to get to that point during meiosis?

Biology Today and Tomorrow without Physiology (MindTap Course List)

5th Edition

ISBN:9781305117396

Author:Cecie Starr, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Christine Evers, Lisa Starr

Chapter8: How Cells Reproduce

Section: Chapter Questions

Problem 3CT

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Concept explainers

Oogenesis

The formation of the ovum (mature female gamete) from undifferentiated germ cells is called oogenesis. This process takes place in the ovaries (female gonads). Oogenesis consists of three stages known as the multiplication phase, growth phase, and maturation phase.

Cell Division

Cell division involves the formation of new daughter cells from the parent cells. It is a part of the cell cycle that takes place in both prokaryotic and eukaryotic organisms. Cell division is required for three main reasons:

Question

If an organism has a total diploid chromosome number of 18, how many chromosomes will be in a
single gamete?
54
9.
18
36

Since the goal of making haploid gametes is to create cells with only one full set of chromosomes
instead of two sets, why don't diploid cells just have to divide once to get to that point during
meiosis?
it is to make sure that the alleles of genes are the same in all of the gametes
it is necessary to produce large numbers of gametes
because the cells are replicated before meiosis begins
because gametes have RNA instead of DNA

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