You Are Examining the Effect of Maturation-Promoting Factor (MPF)in Sea

question 13

Multiple Choice

You are examining the effect of maturation-promoting factor (MPF) in sea urchin cells,which have a diploid number of 36.If you fuse a dividing sea urchin cell with a G₁ arrested oocyte,what would be the outcome?

• A)The G₁ cell would enter mitosis,but would likely arrest at the spindle checkpoint because the chromosomes have not been properly replicated.
• B)The G₁ cell would undergo mitosis and its daughter cells would each have 36 chromosomes.
• C)The G₁ cell would undergo mitosis and its daughter cells would each have 18 chromosomes.
• D)The G₁ cell would first go through S phase and then mitosis.Its daughter cells would have 36 chromosomes.

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Definitions:

Introspection

The examination of one's own conscious thoughts and feelings, used as a method of self-reflection and in psychological studies.

Gestalt Psychology

A theory of mind and brain proposing that the operational principle of the brain is holistic, parallel, and analog, with self-organizing tendencies, or that the whole is different from the sum of its parts.

James

Refers to William James, an American philosopher and psychologist who is often referred to as the "Father of American psychology".

Ancient Greeks

The Ancient Greeks were people belonging to the Greek civilization during a period from the Dark Ages about 1200 BCE to the end of antiquity (c. 600 AD). This era was marked by significant developments in art, philosophy, science, and politics.