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Title: Can any1 compare the genetic content of the zygote to a body cell of the parent? Post by: smhry on Jan 1, 2012 Can any1 compare the genetic content of the zygote to a body cell of the parent?
Title: Can any1 compare the genetic content of the zygote to a body cell of the parent? Post by: zzwChris on Jan 1, 2012 The zygote contains half of its genome from its father and the other half from its mother. It makes no difference what body cell you look at except (sperm and egg) If it has a nucleus the zygote contains half of each parent.
Title: Can any1 compare the genetic content of the zygote to a body cell of the parent? Post by: lhendrix on Jan 4, 2012 well a zygote is a fertilized egg, which contains 23 or half of its chromosomes (identity) from the father, and is creating a genetic make up for an offspring. A cell not related to the reproductive sysytem is a somatic cell which has the general genetic /DNA content of the in this case woman.
Title: Can any1 compare the genetic content of the zygote to a body cell of the parent? Post by: dave on Jan 6, 2012 A typical zygote would contain half of its chromosomes from the father and the other half- from its mother. DNA-containing organelles (e.g. mitochondria) are, generally, from the mother, although some exceptions are known.
Importantly, gametogenesis is almost always accompanied by crossingover of homologous chromosomes in meiosis. Therefore, you can trace a chromosome to one of the parents, but it would not be an exact copy of one of the two parental chromosomes. Instead, it would be a patchwork of both. As a side note, it matters to what cell in the parent organism you do the comparison. Some cells (e.g. our B- or T-cells) have specific rearrangements of DNA. Some others normally increase the copy number of their chromosome. And some (e.g. our mature red blood cells) have no DNA at all. |