humans have 46 chromosomes, but does that mean only 23 of them have different genes? considering that the other 23 should be the same genes but different alleles.
i.e.
you get from your father
tallness (dominant) and brown hair (recessive)
from mother
shortness (recessive) and blonde hair (dominant)
that's 4 chromosomes, but they only determine 2 traits, height and hair color, and you ultimately end up being a tall blonde.
Also, during segregation of the alleles in self pollination, when the alleles separate during the formation of the gametes, do the traits separate randomly? or are they stuck to one type of sex cell?
ie (mendel)
a plant has the tall allele and short allele (Tt)
during self pollination, the allele splits (T) (t)
does it mean that the dominant allele will always be in "male" cells and recessive in "female" cells (or other way around)
or is it random, some male have dominant, some have recessive, and so forth?
thanks in advance.
2007-03-27
14:11:15
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3 answers
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asked by
neglect
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