Question

The embryo/fetus is most susceptible to damage from harmful environmental factors during __________.

Answer 1

Ans.

The embryo develops after 14 day of conception and till 8th week, it represents embryonic stage. The embryo is most susceptible to damage from external harmful factors, such as toxic chemicals, pathogens including viruses and bacteria, and poor nutrition in initial three months, which is known as critical period of differentiation.

Thus, the correct answer is 'option a). the first trimester.'

Answer 2

d. preeclampsia

After fertilization, the process of sperm and the egg cell meeting and undergoing conjoint process a zygote is formed. A zygote now here is formed because of the combined gametes of the parent sperm and parent egg. The DNA that prevails in the zygote is the genetic material of the parent cell.