THE MOLECULAR BASIS OF INHERITANCE
THE HUMAN GENOME
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
22 autosomes and an X chromosome
|
|
22 autosomes and a Y chromosome
|
|
45 autosomes and an X chromosome
|
|
45 autosomes and a Y chromosome
|
Detailed explanation-1: -Egg cells are haploid gametes of females, which means they have one-half set of chromosomes. Thus, they have 22 autosomes and an X-chromosome for a total of 23 chromosomes total, half of the 46 chromosomes in a complete somatic cell.
Detailed explanation-2: -Each sperm cell contains 23 chromosomes : 22 autosomes and one sex chromosome X or Y.
Detailed explanation-3: -Human sperm (and eggs) are in the haploid state, meaning that only have one copy of each chromosome, or 22 autosomes and one sex chromosome (either X or Y).
Detailed explanation-4: -A diploid cell has two complete sets of chromosomes. Most cells in humans are diploid, comprising 23 chromosome pairs, so 46 chromosomes in total. This is 22 pairs of autosomes and a pair of sex chromosomes.
Detailed explanation-5: -Definition. Containing one copy of each chromosome. Human gametes (egg and sperm cells) are haploid, containing 22 autosomes and one sex chromosome.