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How many homologous diploid chromosomes are there in (a) human being (b) dog (c) rice |
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Answer» tion:a. in human beingThe 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 dogA 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". |
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