__________ Mitosis produces 2 genetically identical cells; meiosis produces 4 da
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__________ Mitosis produces 2 genetically identical cells; meiosis produces 4 daughter cells, each of which may be genetically different identical __________ wild-type (dominant red eye) male Drosophila are crossed to white eyed females. The eye color gene resides on the X-chromosome. It is possible to obtain rare (1 in 2000) female progeny flies that are white eyed due to rare chromosomal non-dysjunction during meiosis. _____________ In meiosis, homologous chromosomes pair and separate in anaphase 1; sister chromatids separate in anaphase II _____________ Non-dysjunction referes to non-separation of either homologous chromosomes or sister chromatids during chromosome segregation in meiosis ____________ The ends of the chromosome are known as acromeres ______________ Human males are homozygous for genes on the X-chromosome _______________ Crossing over always involves a significant loss of genetic material and this is the source of genetic variation ___________ The karyotype of a human male is shown below. He has a normal karyotype ________A true breeding double dominant strain of com (AABB) is crossed to a true breeding double recessive strain (aabb). The F1 plants (AaBb) are then test crossed. If the A/a locus is linked to the B/b locus then we should expect more Ab and aB gametes compared to AB and ab gametes in the FI plants. _____________ Multiple alleles refer to the existence of three or more alleles of a gene in a single individual.Explanation / Answer
1. True mitosis produces identical.two cells but meiosis produces 4 dissimilar daughter cells.
3. True: homologous chromosomes separate at Anaphase 1 whereas chromatids separate at Anaphase 2.
4. True non disjunction occurs during Anaphase 1 of Meiosis where homologous chromosomes or chromatids fail to separate.
5. False ends of chromosomes are called telomeres
6. True as human male have only one X chromosomes so they are equivalent to homozygous. Such a condition is called homozygous condition.
7. False crossing over causes exchange of genetic material and causes variation.
8. False it has extra dosage of X chromosome. And is XXY
9. True linkage will cause the genes to remain linked during inheritance.
10. False it refer to multiple alleles in one species.
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