Question

Height of a person depends on their
A. Genes
B. Blood
C. Habits
D. None of the above

Answer 1

The expression of traits in the offspring depends on the factors inherited from their parents. The autosomes carry the individual traits. Some of the traits are acquired during the lifetime which is not transferred to another generation.

Complete answer:
-During the sexual reproduction the traits transferred from one generation to another. DNA acts as the genetic material. It carries genes which are responsible for expression of traits. They carry the information that determines the traits. The genes carry the individual characters such as height, skin color, eye color, etc.
-These are the inherited characters produced by genes transmitted from parent to offspring. Single character may be controlled by many genes. Genes carry to dominant and recessive traits. Dominant trait suppresses the recessive trait. If both the parents carry a dominant trait then it is fully expressed in the child.
-Blood helps in the nourishment of the child. It does not carry characters of the individual.
-Habits of the individual are the acquired traits. Height is not the acquired character.

Hence, the correct answer is option (A).

Note: Approximately 25000 to 35000 genes are present in the single cell of the human body. The acquired characters are a response to the environment. The male and female gametes contribute equally to transfer traits to the offspring. They carry one gene for each characteristic from gene pairs of parents. Some of the traits such as mitochondrial genes always pass from mother to the child.