Humans and most other mammals have two sex, the X and the Y. Females have two X in their , while males have bothX and a Y in their . Egg all contain an X , while sperm cells contain an X or Y .
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What is the male?
What is the male chromosome? Males have one Y chromosome and one X chromosome, while females have two X chromosomes. In mammals, the Y chromosome contains a gene, SRY, which triggers embryonic development as a male. The Y chromosomes of humans and other mammals also contain other genes needed for normal sperm production.
How many sex chromosomes does a human cell have?
Humans and most other mammals have two sex chromosomes, the X and the Y. Females have two X chromosomes in their cells, while males have both X and a Y chromosomes in their cells. Egg cells all contain an X chromosome, while sperm cells contain an X or Y chromosome. This arrangement means that it is the male that determines the sex ...
What is the difference between sex chromosomes and autosomes?
The twenty third pair is called the sex chromosomes, while the rest of the 22 pairs are called autosomes. Typically, biologically male individuals have one X and one Y chromosome (XY) while those who are biologically female have two X chromosomes. However, there are exceptions to this rule. The sex chromosomes determine the sex of offspring.
How are the Y chromosomes of all living men related?
The Y chromosome of all living men is related through a single male ancestor who lived over 100,000 years ago. In the nucleus of each cell, the DNA molecule is packaged into thread-like structures called chromosomes. Most human cells contain 23 pairs of chromosomes.