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Chapter 9: Problem 8

The time during fetal growth when specific parts or organs develop is known as ___________. a. critical period b. mitosis c. conception d. pregnancy

Short Answer

Expert verified
The correct answer is a) Critical period.

Step by step solution

01

Extract information from the question

In this exercise, the term, which refers to the time during fetal growth when specific parts or organs develop, is asked. There are four options are given: a) Critical period, b) Mitosis, c) Conception, d) Pregnancy. No calculations or extended line of reasoning is needed.
02

Compare the options with the definition

a) The term 'critical period' refers to the time during fetal growth when specific parts or organs are developing. These are sensitive periods during which the organism is particularly vulnerable to deprivation or damage. b) 'Mitosis' is a part of the cell cycle when replicated chromosomes are separated into two new nuclei. c) 'Conception' is the fertilization of an egg by a sperm, usually occurring in the ampulla of the fallopian tube. The result of this union is the production of a zygote cell, or fertilized egg d) 'Pregnancy' is the period of time during which an offspring develops inside a woman.
03

Identify the correct term

Among all those options, the term 'critical period' is the most suitable answer to the question because it is directly related to the time period during the fetal growth when specific organs or parts develop. Also, in the context of developmental biology, a critical period is a phase in the life span during which an organism has heightened sensitivity to exogenous stimuli that are capable of producing irreversible changes in brain structure and function. So, the answer is a) Critical period.

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