Question

Why is sperm with 22 + Y karyotype called Androsperm?​

Answer 1

Required Answer:

First of all lets learn about Sex Chromosomes:

• A sex chromosome, (also referred to as an allosome, heterotypical chromosome, or heterochromosome, or idiochromosome) is a chromosome that differs from an ordinary autosome in form, size, and behavior.
• The human sex chromosomes, a typical pair of mammal allosomes, determine the sex of an individual created in sexual reproduction. Autosomes differ from allosomes because autosomes appear in pairs whose members have the same form but differ from other pairs in a diploid cell, whereas members of an allosome pair may differ from one another and thereby determine sex.

Secondly lets see about Y chromosomes :

• The Y chromosome is one of two sex chromosomes (allosomes) in mammals, including humans, and many other animals.
• The other is the X chromosome. Y is normally the sex-determining chromosome in many species, since it is the presence or absence of Y that typically determines the male or female sex of offspring produced in sexual reproduction.
• In mammals, the Y chromosome contains the gene SRY, which triggers male development. The DNA in the human Y chromosome is composed of about 59 million base pairs.
• The Y chromosome is passed only from father to son. With a 30% difference between humans and chimpanzees, the Y chromosome is one of the fastest-evolving parts of the human genome. The human Y chromosome carries an estimated 100-200 genes, with between 45 and 73 of these protein-coding.
• All single-copy Y-linked genes are hemizygous (present on only one chromosome) except in cases of aneuploidy such as XYY syndrome or XXYY syndrome.

Thirdly lets learn about Androsperm :

• A sperm cell carrying a Y chromosome.

Thank you for asking such an useful Question Mate.