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Trisomic condition in which there is one extra chromosome on an autosome.

For eg. Down's Syndrome

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13y ago

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A human egg cell has 23 chromosomes. How many chromosomes will a human zygote have?

46


How many chromosomes human zygote possess?

46 23 from each parent...unless there is a mutation. Hi sorry to but in, but i was just wondering. If a human zygote contains 46 chromosomes and then total chromosomes they have is 46. Then if a mouse has 40 chromosomes would it's zygote be 40 as well? I have Biology homework and i was just wondering. Thanks!


How many chromosomes in human diploid zygote?

A normal human diploid zygote contains a full set of 46 chromosomes. A zygote refers to the initial cell that is formed when two gamete cells join together through sexual reproduction.


What might result in a human zygote with 45.?

A human zygote with 45 chromosomes may result from a chromosomal abnormality known as a monosomy, where one copy of a chromosome is missing. This condition is typically associated with severe developmental abnormalities and is often incompatible with life.


How many chromosomes does a human sperm or egg cell contain?

The human egg or sperm cell is haploid and contains 23 chromosomes. After fertilization (egg and sperm fusion), the zygote will have 46 chromosomes (23 pairs).


What is a zygote and how many chromsomes does it have?

A zygote is a cell that is the result of the fusion of an egg and a sperm. It has a total of 46 chromosomes in a genetically normal human.


If gametes were diploid like somatic cells how many chromosomes would the zygote contain?

If gametes were diploid, the zygote would contain double the number of chromosomes found in a typical diploid zygote. So, if a human diploid cell normally has 46 chromosomes, a diploid gamete would have 46 chromosomes as well, resulting in a zygote with 92 chromosomes.


What portion of the sperm contains 23 chromosomes?

The head of the sperm contains 23 chromosomes. This is where the genetic material is housed, which combines with the egg's genetic material to form a complete set of 46 chromosomes in the resulting zygote.


How many chromosomes are in a human zygote which has Down Syndrome?

Human cells have 23 pairs of chromosomes, giving a total of 46 per cell.


Why is it important to have half as many chromosomes as normal body cells?

The gametes must have half as many chromosomes as normal body cells because they unite to form a zygote, which is the first body cell of the new organism. For example, human body cells have 46 chromosomes and human gametes (sperm and egg cells) have 23 chromosomes. When the sperm fertilizes the egg, the zygote will have 46 chromosomes, and is the first body cell of the new human.


How many chromosomes does the egg cell of a fruit fly have?

A zygote is formed from the union of two gametes. The number of chromosomes differs from different species, but in humans, there are 46 chromosomes. 23 from the male gamete and 23 from the female gamete.


How many pairs of sex chromosome in zygote of human?

A human zygote typically contains one pair of sex chromosomes, resulting in a total of 46 chromosomes. This pair determines the individual's sex: females have two X chromosomes (XX), and males have one X and one Y chromosome (XY).