Which of the Following Was a Discovery That Had to Be

question 61

Multiple Choice

Which of the following was a discovery that had to be made before human chromosomes could be correctly counted?

• A) how to use a hypotonic solution to swell nuclei
• B) how to visualize sperm nuclei
• C) how to visualize chromosomes
• D) when to see chromosomes separate from one another
• E) when to see chromosomes in pairs

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Definitions:

Fertilized Egg

An egg cell that has been penetrated by a sperm cell, initiating the development of a new organism.

Estrogens

A group of steroid hormones that promote the development and maintenance of female characteristics of the body.

Progesterone

A hormone released by the ovaries that plays a role in the menstrual cycle and pregnancy.

Menstruation

The monthly shedding of the uterine lining in females, part of the menstrual cycle that prepares the body for pregnancy.