The scenario will be Son: 25% colorblind daughter: 25% colorblind son: 25% of carrier daughters with normal vision: 25% normal son
<h3>What is color blindness?</h3>
The condition is frequently inherited. Certain eye diseases and medications are also possible causes. Men are more affected than women.
Color blindness is characterized by the inability to distinguish between red and green shades.
A colorblind man's genotype is XcY, and a heterozygous carrier female's genotype is XcX. A cross between XcY and XcX would result in progeny with the following ratio=
Son: 25% colorblind daughter: 25% colorblind son: 25% of carrier daughters with normal vision: 25% normal son.
Thus, the couple is likely to have a son who is half normal and half affected. Similarly, the couple is likely to have 50% normal daughters and 50% colorblind daughters.
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The sickle cell anemia is genetic disorder, in which the red blood cell becomes sickle shaped instead of its biconcave shape. This condition is a autosomal recessive disorder.
The carriers are the people, who are unaffected by the disorder, but carry one recessive allele, which can cause the disease in next generation. They are hetrozygous for the trait.
It is estimated that 1 out of every 10 or 10% African American are the carriers of the Sickle cell anemia.
So, the correct answer is Approximately, 10% African Americans is a carrier for sickle-cell anemia.
A. endoskeleton
Endoskeleton is not a characteristic of Arthropods that has attributed to their diversity and success. Endoskeleton is defined as inner characteristics of the skeletal feature of an organisms such as bears, humans, fish and etc.
Exoskeleton on the other hand is the trait by which arthropods posses. It is skeletal feature that is described outside or is extrinsic, this is evident as crabs have their skeletons outside of their body.
Answer:
False.
Explanation:
Someone with A antigens can have antibodies.
Even though, they have another disease, does not mean they will not catch antibodies.