A diploid (2n) cell undergoes meiosis. How many chromosomes will each gamete contain?

Question

BlackTom AI · Accepted Answer

Question restatement: A diploid (2n) cell undergoes meiosis. How many chromosomes will each gamete contain?

Option 1: 'Half n' — This phrasing is misleading. 'n' represents the haploid chromosome set, so a gamete does not contain 'half of n'; it contains exactly n chromosomes as the haploid set. The idea of 'half of n' would imply a fractional or inconsistent count, which biology does not support here.

Option 2: '4n' — This would indicate a tetraploid chromosome set, which is not produced in gamete formation by standard meiosis. Meiosis reduces the chromosome number from 2n to n, not to 4n, so this option overstates the final chromosome content.

Option 3: 'n' — This is the correct interpretation. Meiosis converts a 2n diploid cell into haploid gametes containing n chromosomes each. The process includes one round of DNA replication followed by two divisions, resulting in four haploid products, each with one chromosome set represented by n chromosomes.

Option 4: '2n' — This would describe the chromosome count of the original somatic (non-reproductive) diploid cell, not the gametes. Gametes are not 2n after meiosis; they are reduced to the haploid state, so this option does not describe the gamete chromosome content.

Additional clarification: In meiosis, cells start as 2n after S phase with duplicated chromosomes. The two divisions reduce the chromosome number by half, yielding gametes that contain one complete set of chromosomes, i.e., n. This ensures offspring receive a full diploid complement when gametes fuse during fertilization.

AGRI10051_2025_SM2 Supplementary or Special Exam: Genetics for Agriculture (AGRI10051_2025_SM2)- Requires Respondus LockDown Browser

A diploid (2n) cell undergoes meiosis. How many chromosomes will each gamete contain?

查看解析

登录即可查看完整答案

类似问题

Question at position 73 Crossing over between homologous chromosomes occurs during and homologous chromosomes separate from each other during .prophase I; anaphase IIprophase II, telophase Iprophase I; anaphase Iprophase II; telophase II

Question at position 62 If a diploid cell (2n = 16) undergoes meiosis I and II, the result is:2 cells; each with 2n = 82 cells; each with 2n = 164 cells; each with n = 84 cells; each with 2n = 322 cells; each with 2n = 32

Question at position 5 Crossing over occurs in Printed Blank[input]Question Blank 1 of 1[input] 1.anaphasecytokinesistelophaseinterphasemetaphaseprophase

In the ovule each megaspore mother cell undergoes _____ to produce four megaspores.

In humans, the main purpose of cell division by meiosis is