Answer: Growing a beard in males is an example of a sex-limited trait.
Answer:
Birth is an example of a normally occurring positive-feedback mechanism.
Answer: i would say the answer is d
Answer:
Genes.
Explanation:
Genes are present on DNA that are inherited from parents to their offspring. Genes may be defined as the segment of DNA that ultimately form a particular protein product.
The particular trait of an organism is determined by the specific combination of the inherited genes. The genes are nearly same in all the human beings and there mutation can cause observable phenotype traits.
Thus, the correct answer is option (2).
Isn't it none of the above? don't cells use mitosis?
