At the end of meiosis I: the cells are haploid and the homologous pairs are in separate cells. cells are haploid. the homologous pairs are in separate cells. cells are diploid. sister chromatids are in separate cells.

At the end of meiosis I: the cells are haploid and the homologous pairs are in separate cells. cells are haploid. the homologous pairs are in separate cells. cells are diploid. sister chromatids are in separate cells.

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter2: Cells And Cell Division

Section: Chapter Questions

Problem 23QP: A cell has a diploid number of 6 (2n = 6). a. Draw the cell in metaphase of meiosis I. b. Draw the...

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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

At the end of meiosis I:

the cells are haploid and the homologous pairs are in separate cells.

cells are haploid.

the homologous pairs are in separate cells.

cells are diploid.

sister chromatids are in separate cells.

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A cell has a diploid number of 6 (2n = 6). a. Draw the cell in metaphase of meiosis I. b. Draw the cell in metaphase of mitosis. c. How many chromosomes are present in a daughter cell after meiosis I? d. How many chromatids are present in a daughter cell after meiosis II? e. How many chromosomes are present in a daughter cell after mitosis? f. How many pairs of homologous chromosomes are visible in the cell in metaphase of meiosis I?
Figure 13.6 Which of the following statements about nondisjunction is true? Nondisjunction only results in gametes with n+1 or n-1 chromosomes. Nondisjunction occurring during meiosis II results in 50 percent normal gametes. Nondisjunction during meiosis I results in 50 percent normal gametes. Nondisjunction always results in four different kinds of gametes.
A cell (2n = 4) has undergone cell division. Daughter cells have the following chromosome content. Has this cell undergone mitosis, meiosis I, or meiosis II?
Which statement best describes the genetic content of the two daughter cells in prophase II of meiosis? haploid with one copy of each gene haploid with two copies of each gene diploid with two copies of each gene diploid with four copies of each gene
Tetraploidy may result from: a. lack of cytokinesis in meiosis II b. nondisjunction in meiosis I c. lack of cytokinesis in mitosis d. nondisjunction in mitosis in the early embryo e. none of these
After telophase II of meiosis, the chromosomal makeup of each daughter cell is: Practia diploid, and the chromosomes are each composed of a single chromatid. O diploid, and the chromosomes are each composed of two chromatids. O haploid, and the chromosomes are each composed of a single chromatid. O haploid, and the chromosomes are each composed of two chromatids.
What separates during anaphase of Meiosis I? Pairs of sister chromatids from homologous pairs of sister chromatids (i.e. homologues separate) Sister chromatids separate from one another Nucleoids separate form one another The two strands of DNA separate from one another
pair of homologous chromosomes pair of homologous chromosomes HH nondisjunction normal meiosis I meiosis II normal meiosis II nondisjunction Sometimes chromosomes or chromatids do not separate as they normally would during meiosis and this phenomenon is called non-disjuction. This phenomenon has occurred in the above diagrams during anaphase II in A and anphase I in B anaphase I in A and anaphase II in B metaphase I in A and metaphase II in B metaphase II in A and metaphase I in B
MITOSIS MEIOSIS 1. Haploid cells are produced 2. Crossing over takes place 3. One division 4. Diploid cells 5. Formation of tetrads 6. Somatic cells 7. For sexual reproduction 8.2 daughter cells 9. Two divisions 10.Separation of homologous chromosomes 11.Daughter cels with chromosomes identical to parent cell 12. For repair of damaged tissue 13 Cross-linkage of genes 14 Sex cells 15 Daughter cells not identica to the parent cell O 0 O 0 O OO0 O o o O 0 0 o 0 O O O O O
All of the following are distinctions between the process of mitosis and meiosis EXCEPT: Group of answer choices homologous chromosomes in meiotic cells conduct synapsis meiotic cells produce genetically distinctive cells meiotic cells go through two cell divisions meiotic cells have homologous chromosomes where mitotic cells do not 2. A scientist working in an IVF (in vitro fertilization) clinic mistakenly produced a human zygote with 45 chromosomes. What biological process could explain how this happened? Group of answer choices failure of an egg to complete meiosis II failure of the egg nucleus to be fertilized by the sperm a non-disjunction in meiotic anaphase occurring in either an egg or sperm incomplete cytokinesis during spermatogenesis after meiosis I
Consider a cell in which nondisjunction occurs for all chromosomes during meiosis I. What would be the result of this event? Multiple Choice two diploid gametes two haploid gametes and one aneuploid gamete with an extra set of chromosomes four aneuploid gametes four haploid gametes
Which stage of meiosis involves the separation of homologous pairs of chromosomes? anaphase II metaphase II prophase I anaphase I Gametic meiosis, where the haploid phase is unicellular and the diploid phase is multicellular, is characteristic of fungi animals bacteria plants