If color blindness is an X-linked recessive trait, what genotype in a father and a mother would be predicted to produce a 1:1 ra
tio of normal to color-blind offspring? A.) Unaffected father and unaffected (non-carrier) mother
B.) Unaffected father and carrier mother
C.) Affected father and carrier mother
D.) Affected father and unaffected (non-carrier) mother
The answer is letter C.) <span>Affected father and carrier mother
"Affected" refers to the person having the recessive gene of the color blindness, while "carrier" means the person carries two of the recessive genes of the trait. For the couple to produce a 1:1 ratio of normal to color-blind offspring, they would need to have the combination of affected father and carrier mother. </span>
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Skeletal muscle moves bones and other structures. Cardiac muscle contracts the heart to pump blood. The smooth muscle tissue that forms organs like the stomach and bladder changes shape to facilitate bodily functions.
92 chromatids are visible for humans at prophase stage because the replication of 46 chromosomes occur. When the replication of chromosomes occur, each chromosome is converted into two chromatids so when 46 chromosomes replication occur then it changed into 92 chromatids. So we can say that there is 92 chromatids in humans in the prophase stage of mitosis.
