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How is a mothers age related to the probability of nonseparation of chromosomes in her gametes?
Wiki User
∙ 11y ago
Well, there is a very large increase in the incidence of Trisomy 21 as the age of the mother increases. So, it appears that the probability of nonseparation of chromosomes becomes more probable as the mother ages.
Wiki User
∙ 11y ago
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How the sex of a person determined?
Human cells contain 23 pairs of chromosomes for a total of 46. There are 22 pairs of autosomes and one pair of sex chromosomes. The sex chromosomes are the X chromosome and the Y chromosome. If you are male you have the XY chromosome.. making you a male. If you are female you have the XX chromosome.. making you a female. It all depends on the father, if the father gives an X chromosome... you have a girl. Because it combines with the mother's X chromosome.. creating XX(a female) If the father give a Y chromosome.. you a have a boy. It combines with the mothers X chromosomes.. creating XY(a male)
Is the mitochondrial DNA in a baby more like the mitochondrial DNA from his mother's mother or the mitochondrial DNA from his father's mother?
It is exactly like the mothers (except for some possible random mutations). The mother's egg has all of the cytoplasmic components inside it. The sperm only carries DNA. So mitochondria are maternally inherited. While the sperm does contain mitochondria in its tail, only the DNA from the head are transported into the ovum. The DNA of the child consists of half the genetics of the mother and half the genetics of the father. This is because the sperm carries 22 chromosomes and an extra sex chromosome (X or Y). The egg inside the mother also carries 22 chromosomes and a sex chromosome (X or X). When these meet we get 22 sets of chromosomes and a set of sex chromosome (X,Y or X,X) which determines the gender of the child. However, if the mother or the father is carrying an extra 21st chromosome and for example, the child receives 2 21st chromosomes from the father and 1 from the mother, they now have 3 21st chromosomes which can lead to the child being born with downs syndrome.
What trophic level is the kingdom protista on?
Your mothers. ;)
Who discovered natural fiber?
your mothers face
What is Lloyd Halls mothers name?
Isabel Hall
When your born do you have more of your mother or your father?
no it is pretty much equal. a normal body cell (somatic cell) has 46 chromosomes and sex cells (gametes) only has 23 chromosomes - so that would be your mothers sex cell (23)+ your fathers sex cell(23) = you (half of each person) 46 chromosomes.
When are haploid cells?
When they only have one of each chromosome - usually chromosomes are paired (diploid). In cells such as gametes (sperm, oocyte), only half of the parental DNA is present to allow the mothers DNA to mix together with the fathers DNA to make a new combination in the offspring.
How many chromosomes do you get from mothers?
24 from both your mom and dad that makes 48 then they duplicate
Why are gametes haploid cells?
Mammals cannot survive as a haploid cell, and meiosis creates four gametes that are haploid, so the two haploid cells need to combine in order to have a diploid zygote that is also genetically different.
In terms of sex chromosomes what do females inherit from they mothers?
1.. they only inherit the X chromosome
Can parents pick if they want a boy or a girl?
Unfortunately, no they cannot. It depends on the mother chromosomes (XX) and the father chromosomes(XY). The chromosomes from the father is basically the only chromosomes to detect the sex of the baby. Boy or Girl. If a mother's X chromosome meets with the fathers X chromosome, it will be a girl. If a mothers chromosome X meets with the father Y chromosome, it will be a boy.
Who is kyle birkhauser?
My mothers,mothers,mothers,mothers,mothers,mothers,mothers,mothers,mothers,mothers,mothers,mothers,mothers,mothers,mothers,mothers,mothers,mothers,mothers,mothers,mothers,mothers,mothers,mothers,mothers,mothers,mothers, son.
Why does your nose look like your mom?
Because you get her genes and her chromosomes, which affects how you look, if you can get certain diseases, and it also gives you a few of your mothers skills;ex.art, singing, ext.
How much of your mothers genes do you receive and how much of your fathers?
Each human has 46 chromosomes. You get 23 from your mother and 23 from your father. Therefore, you have half (50 percent) from your mother and half (50 percent) from your father.
What is the probability of the baby having the fathers blood type over the mothers?
Male or female doesn't make a difference in blood type. A and B are dominant over O, and positive is dominant over negative.
Can a person be his own father?
Yes you can Marry your mother but that's illegal all most everywhere and your not really your own father but rather your stepfather. If it was possible you could go back I time and have sex with your mother but you really wouldn't be your father still because you are made of Half your mothers chromosomes and half your fathers so having sex with your mother would result in a .75 (your mothers) chromosome + .25 (your real fathers chromosomes) Baby. So ultimately no you truly can't be your own biological father.
What determines if a gorillia will be male or female?
If a gorilla has two X chromosomes, it will be female; if it has one X and one Y, it will be male. All gorillas get one X chromosome from their mothers and the other sex chromosome from their fathers.
