Meiotic nondisjunction. In meiosis I or II, chromosome pair 21 fail to separate correctly, leaving one gamete with an extra chromosome 21.
A zygote is a fertilized egg cell, so it is diploid and thus has a full set of DNA. If the adult has 30 pairs of chromosomes, the zygote would have 30 pairs. If there are 30 chromosomes, then the zygote will have 60 (30 from the mother and 30 from the father). It comes down to whether you meant individual chromosomes or pairs of chromosomes.
A cat's zygote contains a total of 38 chromosomes. This is because cats are diploid organisms, meaning they inherit one set of chromosomes from each parent, resulting in 19 pairs. Therefore, the total number of chromosomes in a cat's zygote is 2n = 38.
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!
The resulting zygote would have 47 chromosomes, which is an extra chromosome compared to the normal human chromosomal number of 46. This condition is called trisomy and can lead to genetic disorders such as Down syndrome.
Sperm contains 23 chromosomes. An egg contains 23 chromosomes. The zygote (a fertilized egg) contains 46 chromosomes. Yet, it is also important to consider that the egg completes meiosis before joining with the sperm, thereby shedding half of its 46 chromosomes into a polar body that adjoins the zona pelucida lining.
A human zygote with 47 chromosomes has a condition called trisomy, specifically trisomy 21 if the extra chromosome is chromosome 21. This results in Down syndrome, a genetic disorder characterized by intellectual disability and physical abnormalities.
Zygote=2 Gamate=1
chromosomes are present in the nucleus of zygote.
8 chromosomes
A zygote is a fertilized egg cell, so it is diploid and thus has a full set of DNA. If the adult has 30 pairs of chromosomes, the zygote would have 30 pairs. If there are 30 chromosomes, then the zygote will have 60 (30 from the mother and 30 from the father). It comes down to whether you meant individual chromosomes or pairs of chromosomes.
Yes, nondisjunction results in a germinal cell (ovum or spermatozoa) with either too many or too few chromosomes. If one of these cells joins with another to form a zygote, there may be one or more too many or too few chromosomes in the cells.
46 I think
there are 23 sets
46
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!
A zygote has twice the amount of chromosomes as a gamete.
The resulting zygote would have 47 chromosomes, which is an extra chromosome compared to the normal human chromosomal number of 46. This condition is called trisomy and can lead to genetic disorders such as Down syndrome.