HEREDITY
SEX LINKAGE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Yes, she has two recessive alleles
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Yes, there is only one type of allele
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No, I have to get DNA from dad too
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No, I am a boy and don’t get DNA from mom
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Detailed explanation-1: -The nucleus contains genetic info in a combination of 23 pairs of chromosomes that are made from DNA. You inherit one pair from each of your parents. Only one pair, chromosome 23 determines the gender. Genetically, a person actually carries more of his/her mother’s genes than his/her father’s.
Detailed explanation-2: -Specifically, the research shows that although we inherit equal amounts of genetic materials from our parents – i.e., the mutations that make us who we are instead of some other person – we actually “use” more of the DNA that we inherit from our fathers.
Detailed explanation-3: -The autosomes (chromosomes 1–22) are passed down equally from each parent; one copy from each parent. Therefore, a parent and a son or daughter would share 50% of their autosomal DNA.
Detailed explanation-4: -Your genome is inherited from your parents, half from your mother and half from your father. The gametes are formed during a process called meiosis. Like your genome, each gamete is unique, which explains why siblings from the same parents do not look the same.