Which statement most closely indicates the degree of genetic relatedness of the indicated groups?
A) Identical and fraternal twins share all their genes and siblings share about 50 % of their genes.
B) Identical twins share all their genes and fraternal twins and other siblings share about 50 % of their genes.
C) Identical twins and fraternal twins share about 50 % of their genes and other siblings share about 25 % of their genes.
D) Identical twins share about 50 % of their genes and fraternal twins and other siblings share about 25 % of their genes.
E) Identical twins share all their genes while fraternal twins and other siblings have only a very slight degree of genetic relatedness.
Correct Answer:
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