AP BIOLOGY

HEREDITY

THE PEDIGREE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
If AFFECTED males have AFFECTED sons,
A
the trait is probably autosomal.
B
the trait is possible sex-linked.
Explanation: 

Detailed explanation-1: -Since autosomal dominant disorders involve autosomes or the non-sex chromosomes, the disorders affect males and females equally.

Detailed explanation-2: -Autosomal dominant inheritance is a way a genetic trait or condition can be passed down from parent to child. One copy of a mutated (changed) gene from one parent can cause the genetic condition. A child who has a parent with the mutated gene has a 50% chance of inheriting that mutated gene.

Detailed explanation-3: -Autosomal recessive diseases typically affect both females and males equally. Autosomal recessive patterns manifest by skipping generations as the affected are usually children of unaffected carriers.

Detailed explanation-4: -If you are born to parents who both carry the same autosomal recessive gene, you have a 25% (1 in 4) chance of inheriting the abnormal gene from both parents and developing the disease. You have a 50% (1 in 2) chance of inheriting one abnormal gene. This would make you a carrier.

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