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That happens in Ana phase.When a chromosome is not split in centromere,a chromosome fully moves to a daughter cell.
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What is it when each gamete gets one gene for each trait?
Independent assortment
If birds have 69 chromosomes. Which bird chromosome is not paired or are there 69 pairs of chromosomes?
Actually, most birds have a diploid number (2n) of ~80 pairs of chromosomes. Two thirds of all birds have between 2n=74 and 2n=82; they have highly conserved karyotypes throughout evolution. The bird you are probably thinking of is a species of kingfisher, which has the highest chromosome number known (2n=134 or 138 - it gets hard to tell with that many). The haploid number of chromosomes is then 67 or 69.
How many chromosomes dose each parent pass to their offspring?
When a parent is going to have an offspring the offspring only gets half a chromosome from each parent, they combine to make one chromosome then that chromosome gets copied until there are 23 pairs of chromosome's. This is how you get your features.
What trimester is a gender of a fetus determined?
When the sperm meets the egg. The sprem contains the gender in the form of an x or y chromosome
How many chromosome are in the original cell compared to those in the new cells formed by cell division?
In Mitosis when only 2 cells are formed out of one the number of chromosomes is the same in Meiosis when ultimately 4 new cells are formed the number of chromosomes is also the same, HOWEVER these chromosomes each contain half the number of genes as theses cells are gametes
Each gamete gets one gene from each trait?
Each reproductive cell (gamete) is 1N (the haploid chromosome count) which means it has a single allele for a genetic trait at each gene locus...this is based on the assumption that the trait is controlled at a single site. Polygenic traits, those controlled or modified at more than one locus, will have multiple alleles for a trait.
What is it when each gamete gets one gene for each trait?
Independent assortment
What stage of cell division would down's syndrome occur?
Down syndrome (trisomy 21) occurs when a gamete carrying an extra copy of chromosome 21 is involved in a fertilization event.The gamete (whether sperm or oocyte) has an extra copy of chromosome 21 because of something called NONDISJUNCTION. This happens when a chromosome gets pulled to the wrong daughter cell.This can happen either in meiosis I or meiosis II.If nondisjunction happens in meiosis I, 2 gametes will be n+1 (have the extra copy of 21) and the other 2 gametes will be n-1 (will have NO copy of 21)If nondisjunction happens in meiosis II, 2 gametes will be normal, one will be n+1 and one will be n-1.
How is the X chromosome inactivated?
The X chromosome is inactivated when a (-CH3) gets added to one of the nitrogenous bases of DNA nucleotides.
Are most of the cells in the human body haploid or diploid?
For a cell to be diploid means it has two sets of chromosomes. A cell gets one set of chromosomes from the mother and one set from the father.
How does someone with Down syndrome get that extra chromosome?
During meiosis homologous chromosomes are separated and only one copy of each chromosome goes into the gamete. If they aren't separated correctly, both copies may go into the gamete. After fertilisation, the embryo will contain 3 copies of that chromosome. If this occurs with chromosome 21, it will result in Down Syndrome.
Because the zygote gets half of its gentic code from each gamete the human offspring?
results in the 46 chromosomes that we have?
What caused anomaly when one daughter cells gets two copies of a chromosome?
The process by which a daughter cell accidentally get two copies of a chromosome is called "nondisjuction".
Why does a gamete only contain 23 in the human body?
You get the other 23 from the opposite sex. The semen and the egg combines and gets 46 chromosomes. If each gamete contained 46 chromosomes, the zygote would contain 92 chromosomes.
Why the female gamete bigger than male gamete?
The female gamete is most likely bigger than the male gamete because it is the cell that will eventually provide the nutrients for the organism that will begin to grow there. It will start forming into a multicellular organism and therefore needs to be big enough to divide.
How do you get chromosome?
boy meets girl, girl meets boy the baby gets chromosomes
Why is a girl a girl instead of a boy?
If a baby gets one X and one Y chromosome, it is a boy. If it gets two X chromosomes, it is a girl.
