NEET BIOLOGY

GENETICS AND EVOLUTION

EVOLUTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
If you are a boy, what percent of your genes did you get from your dad?
A
25%
B
50%
C
75%
D
100%
Explanation: 

Detailed explanation-1: -While women do inherit 50% of their DNA from each parent, men inherit about 51% from their mother and only 49% from their father.

Detailed explanation-2: -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-3: -We inherit a set of 23 chromosomes from our mothers and another set of 23 from our fathers. One of those pairs are the chromosomes that determine the biological sex of a child – girls have an XX pair and boys have an XY pair, with very rare exceptions in certain disorders.

Detailed explanation-4: -After all, children inherit half of their DNA from each parent: 50 percent from mom (through an egg), and 50 percent from dad (through sperm).

Detailed explanation-5: -Genetically, a person actually carries more of his/her mother’s genes than his/her father’s. The reason is little organelles that live within cells, the? mitochondria, which are only received from a mother. Mitochondria is the powerhouse of the cell and is inherited from the mother.

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