Humans have a chromosome number of 2n 46 due to a fusion ev

Humans have a chromosome number of 2n = 46 due to a fusion event that gave rise to our chromosome 2, unlike our closest living relatives, the chimpanzees, which have a chromosome number of 2n = 48. Pay attention to the words in the question! (a) How many pairs of sister chromatids does a chimpanzee have in its somatic cells? (b) What number of chromosomes would be found in a female chimpanzee\'s mature gametes? (c) What number of tetrads would there be in a human female\'s gametic cell during Prophase 1 of Metals 1? (d) What number of chromosomes would there be in a human male\'s gametic cell during G1 of Interphase? (e) What number of chromosomes would there be in a chimpanzee\'s somatic cell immediately following meiotic cytokinesis? On this illustration of chromosome 21, clearly label the centromere, kinetochores and heterochromatin. Place a smiley face in the position of q-ter. Does this represent a chromosome during the S phase of Interphase or a chromosome in Prophase of Mitosis?

Solution

2.

A. 48 pairs of sister chromatids.

B. 24 chromosomes will be found in mature gamete of female chimpanzee.

C. 23 tetrad will be found at prophase I of meiosis I in human.females gametic cell.

D. 46 chromosomes will be found in gametic cell at G1 phase.