Chromosome Size Mismatch in Human Males
Human somatic cells contain 23 pairs of chromosomes: 22 pairs of autosomes and 1 pair of sex chromosomes.
- Autosomes: These are numbered pairs (1 through 22). In both males and females, homologous autosomes within a pair are generally very similar in size and genetic content.
- Sex Chromosomes: In human males, the sex chromosome pair consists of one X chromosome and one Y chromosome (XY). The X chromosome is considerably larger than the Y chromosome. This significant size difference makes the sex chromosome pair mismatched.
In contrast, pairs like the first, thirteenth, or twentieth pair of autosomes are homologous and matched in size.
Therefore, the pair of human male chromosomes that is mismatched in size is the Sex chromosomes.
Important Questions from Genetics and Evolution
Different varieties of the same gene are called
In a sexually reproducing organism, which one of the following statements is appropriate both for the parent and offspring?
In most prokaryotes, the chromosome number is:
Bacterial DNA is referred to as naked because it is not associated with:
The two important features of sexual reproduction in higher organisms that create genetic diversity in offspring are
