Question

What are chromosomes XX and XY? What is their work in reproduction?

Answer 1

Chromosome:

1. Chromosomes are a collection of thread-like structures that come in a variety of lengths and forms.
2. DNA and proteins (mainly histones) make up chromosomes.
3. Genes are carried on chromosomes.
4. They are located in the nuclei of eukaryotic cells.

XX and XY Chromosomes:

1. Chromosomes in humans can be divided into Autosomes and Sex chromosomes.
2. A sex chromosome is a type of chromosome that plays a role in determining a person's gender.
3. Humans have 22 pairs of autosomes and one pair of sex chromosomes.
4. XX is a pair of sex chromosomes that is present in human females.
5. XY is a pair of sex chromosomes that is present in human males.
6. The sex determination mechanism in humans is XY type.
7. Males produce two types of gametes (X and Y) during spermatogenesis.
8. Females produce only one kind of ovum with X chromosomes.
9. The sex of the kid is determined by the genetic makeup of the sperm.
10. The zygote develops into a girl (XX) if the ovum fertilizes with sperm carrying the X chromosome, and a male, if the ovum fertilizes with sperm carrying the Y chromosome (XY).