when a human embryo is developing, the embryo produces a special type of hemoglobin not found in infant, child, or adult blood. why does an embryo produce a different type of hemoglobin from an infant, child, or adult?
a. the embryo has different genes from the infant, child, or adult.
b. development and differentiation result in the loss of certain genes.
c. humans have genes for the different types of hemoglobin, which are expressed at different times

Option-C

Explanation:

Hemoglobin is a protein involved in carrying the oxygen from one part of the body to another by binding it. The hemoglobin structure is found in many forms known as alpha, beta, gamma, delta.

These hemoglobin proteins are coded by different genes controlling the formation of these structures.

These structures are present in different forms at different developmental stages due to expression of different genes at a different time of development like the fetus has gamma chain hemoglobin but adults posses only alpha and beta chain proteins.

Thus, Option-C is correct.

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what is a measurement of the earth’s history divided into time periods?

> fossil record <

sedimentary rock

> geologic time scale <

radioactive elements

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