The answer is B. I hope that this helped.
Answer:
Traits are inherited when genes are passed from parents to offspring.
Explanation:
that is the definition of family traits
Answer:A man with pku marries a woman without any alleles for pku.There is little possibility that a child will inherit PKU
<u>Explanation: </u>
PKU Is Phenylketonuria results in less metabolism of amino acid. It might lead to a mental disorder or behavior problems. It is mostly Genetic.
If only one parent is suffering from it then there is little possibility that it will pass on to a child but if both the parents are having the problem of PKU then there are more chances that the child will also develop such a problem. It can be treated if we catch it at an early stage.
Answer: We need DNA to reproduce and it's unique due in part to recombination. recombination is traded between the chromosomes that make up a pair.
Explanation: