How many homologous diploid chromosomes are there in (a) human being (b) dog (c) rice
Answers
Explanation:
a. in human being
The 46 chromosomes of a human cell are organized into 23 pairs, and the two members of each pair are said to be homologues of one another (with the slight exception of the X and Y chromosomes; see below). Human sperm and eggs, which have only one homologous chromosome from each pair, are said to be haploid (1n).
b. in dog
A dog's body contains trillions of cells. Most of these cells contain a nucleus. In dogs, 38 pairs of autosomes (non-sex chromosomes) can be found in every nucleus, for a total of 76 chromosomes plus the two sex chromosomes (X and Y) for a grand total of 78. During conception, a dog gets one copy of each chromosome from each parent. Chromosomes are made of deoxyribonucleic acid (DNA), the "molecule of life".