1. Which of the following best describes the two divisions that occur in meiosis? (A) The first division results in two diploid cells, and the second division results in four haploid cells. Exper (B) Homologous chromosomes separate in the first division, and paired chromatids ệ ô separate in the second division. (C) The first division results in cells with one-half of the original chromosome number, and the original chromosome number is restored in the second division. (D) Crossing-over occurs during the first division, and independent assortment occurs during the second division.

1. Which of the following best describes the two divisions that occur in meiosis? (A) The first division results in two diploid cells, and the second division results in four haploid cells. Exper (B) Homologous chromosomes separate in the first division, and paired chromatids ệ ô separate in the second division. (C) The first division results in cells with one-half of the original chromosome number, and the original chromosome number is restored in the second division. (D) Crossing-over occurs during the first division, and independent assortment occurs during the second division.

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter11: Meiosis And Sexual Reproduction

Section: Chapter Questions

Problem 20CTQ: Explain how the random alignment of homologous chromosomes during metaphase I contributes to the...

See similar textbooks

Similar questions

Compare meiotic anaphase I with meiotic anaphase II. Which meiotic anaphase is most similar to the mitotic anaphase?
At which stage of meiosis are sister chromatids separated from each other? a. prophase I b. prophase ll c. anaphase I d. anaphase ll
Explain how the random alignment of homologous chromosomes during metaphase I contributes to the variation in gametes produced by meiosis.
Which type(s) of cell division (mitosis, meiosis I,meiosis II) reduce(s) the chromosome number byhalf? Which type(s) of cell division can be classifiedas reductional? Which type(s) of cell division can beclassified as equational?
. Four of the following events are part of both meiosis andmitosis, but only one is meiotic. Which one? (1) Chromatidformation, (2) spindle formation, (3) chromosome condensation, (4) chromosome movement to poles, (5)synapsis.
A diploid species has four chromosomes per set for a total of eightchromosomes in its somatic cells. Draw such a cell as it wouldlook in late prophase of meiosis II and prophase of mitosis. Discuss how prophase of meiosis II and prophase of mitosis differfrom each other, and explain how the difference originates.
1. List three ways in which mitosis differs from meiosis. Be specificMITOSIS MEIOSIS1. 2. 3. 2. What would happen to the chromosome number in gametes and offspring if gametes were formed by the mitotic process instead of the meiotic process?
Somatic cells in organisms of a particular diploidplant species normally have 14 chromosomes. Thechromosomes in the gametes are numbered from 1through 7. Rarely, zygotes are formed that containmore or fewer than 14 chromosomes. For each of thezygotes below, (i) state whether the chromosomecomplement is euploid or aneuploid; (ii) provideterms that describe the individual’s genetic makeupas accurately as possible; and (iii) state whether ornot the individual will likely develop through theembryonic stages to make an adult plant, and if so,whether or not this plant will be fertile.a. 11 22 33 44 5 66 77b. 111 22 33 44 555 66 77c. 111 222 333 444 555 666 777d. 1111 2222 3333 4444 5555 6666 7777
1)Discusses why Meiosis I is referred to as reduction division and why Meiosis II is essentially like Mitosis. 2)Discusses where problems are likely to occur in Meiosis and what these problems could lead to.
Describe the differences in the activity of the homologouschromosomes in prophase and metaphase of meiosis I andmitosis.
Starting with One Cell describe and draw step by step the process of Meiosis I in males and females (theyhave different end results). How many viable cells are there for the male and for the female.at the end ofMeiosis I?
3. The cells shown in the diagram are in various stages of mitosis or meiosis. All the cells come the same individual (a mammal). (a) What is the diploid number of chromosomes in this animal? (b) Give the names of each stage shown. Mannへ Wwwしw