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They don't gain cells. If you are referring to Down syndrome it is because there is a mutation in the chromosomes of the DNA. Specifically, the chromosome # 21. The DNA is within the cell.
What else can I help you with?
What are the cells that result from cell division?
zygotes
What is a 7 letter word for cell division?
gametes, zygotes
What is total number of cell division during formation of 50 zygotes?
The formation of 50 zygotes would involve a total of 49 rounds of cell division, starting from the fertilization of an egg by a sperm. Each round of cell division doubles the number of cells. So, the total number of cell divisions required for 50 zygotes would be 49.
When does the first mitotic division occur in zygotes?
You remain as a single cell for about 1/2 hour
Are zygotes haploid or diploid after fertilization?
After fertilization, zygotes are diploid.
How are identical twins genetically from fraternal twins?
Identical twins are genetically the same, because they come from the same fertilized egg/sperm cell zygote, which happens to split into two viable zygotes. Fraternal twins, however, come from two different egg/sperm cell zygotes, that are concurrently fertilized and remain viable.
How do jellyfish protect zygotes?
A jellyfish protects Zygotes by Stinging anything that will try to harm it
How many cell does each dividing cell form?
Generally, two. However, when forming zygotes, that is, reproductive cells for eggs or sperm, they split in to 4, each containing half of the genome.
Why are trisomy zygotes more likely to survive than monosomy individuals?
Trisomy zygotes typically have an extra chromosome, providing an extra copy of genetic material which can compensate for any missing genes and help maintain normal cellular function. Monosomy individuals, on the other hand, lack one chromosome which can lead to more severe genetic abnormalities and developmental issues, making survival less likely.
Are zygotes haploid or diploid?
Zygotes are diploid, meaning they contain two sets of chromosomes (one set from each parent). This is because a zygote is formed by the fusion of a haploid egg cell and a haploid sperm cell during fertilization.
What is the function of zygotes?
Zygotes are formed by the fusion of a sperm and an egg and are the first stage of development in a new organism. Their primary function is to undergo cell division and differentiation to develop into an embryo.
How do chromosomes gain a extra copy of a gene during meiosis?
Chromosomes can gain an extra copy of a gene during meiosis through a genetic event called non-disjunction, where homologous chromosomes fail to separate properly during cell division. This can lead to an uneven distribution of chromosomes in the resulting gametes, resulting in an extra copy of a gene in one of the daughter cells.
