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What does the Y chromosome produce?

What does the Y chromosome produce?

The Y chromosome contains a “male-determining gene,” the SRY gene, that causes testes to form in the embryo and results in development of external and internal male genitalia. If there is a mutation in the SRY gene, the embryo will develop female genitalia despite having XY chromosomes.

What is the offspring if a sperm with Y chromosomes fertilizes an egg?

If a sperm with a Y chromosome fertilizes the egg, the new cell will have an X and a Y chromosome. The X came from the mother’s egg and the Y came from the father’s sperm. Since the sex chromosome that is made is XY, the cell will grow into a boy baby. Figure 2-2.

What diseases are carried on the Y chromosome?

Loss of the Y chromosome is associated with increased risk of cancer, Alzheimer’s disease, and cardiovascular disease (17). Mutations in the X-linked KDM5C affect heart development in females and males (29).

What will happen if sperm carrying Y chromosome fertilizes with the female gamete?

If the X spermatozoon combines with the mother’s X chromosome, the resulting offspring is a baby girl (XX), whereas if Y spermatozoon fertilizes the mother’s oocyte, the resulting offspring is a baby boy (Gellatly, 2009).

Is the Y chromosome dying?

The degrading human Y This means that within the past 166 million years the human Y lost most of its 1,600-odd genes, a rate of nearly 10 per million years. At this rate, the Y chromosome will disappear in about 4.5 million years.

Does an extra Y chromosome make you a killer?

The court found that while an extra Y chromosome seems like a logical explanation for mutant-aggressive behaviour, there is not much evidence that links the X or Y chromosome to the deviant behaviour of serial killers.

Does Y chromosome mean boy?

Each person normally has one pair of sex chromosomes in each cell. The Y chromosome is present in males, who have one X and one Y chromosome, while females have two X chromosomes.

What is the life span of Y chromosome?

For a boy, sperm with the Y chromosome should be deposited as close as possible to the egg because the Y chromosome has a short lifespan and it will not live longer than 24 hours, compared with the sperm with the Y chromosome which will live in a woman’s body for up to 72 hours.

Can a sperm cell carry a Y chromosome?

Only a sperm cell can carry a y chromosome. A sperm cell can also carry an x chromosome. The ovum can carry only an x chromosome, never a y chromosome. So a cell containing 22 autosomes and a y chromosome must be a sperm cell. Is it the guy’s sperm that makes the gender of a baby? Yes. Sperm carry either an X or a Y chromosome.

Is the X chromosome the same as the Y chromosome?

A man’s sperm contains either X chromosome or Y chromosome which called sexual chromosome. Although enormous sperms will be going to combine with egg but there is only one sperm can fertilize successfully.

What’s the difference between X and Y sperm?

Sperm contains X chromosome: determine female gender of newborn – Big size – Short tail – Slow movement – Endurable, hard to be killed Sperm contains Y chromosome: determine male gender of newborn – Small … Continue reading What is the difference between X and Y sperm?

How many chromosomes does a sperm cell have?

Human somatic (body) cells contain two sets of 23 chromosomes. Human gametes (sperm and egg cells) contain one set of 23 chromomes — 22 autosomes and 1 sex chromosome. Only a sperm cell can carry a y chromosome. A sperm cell can also carry an x chromosome.