Which of the Following Might Result in a Human Zygote

question 54

Multiple Choice

Which of the following might result in a human zygote with 45 chromosomes?

• A) an error in either egg or sperm meiotic anaphase
• B) failure of the egg nucleus to be fertilized by the sperm
• C) fertilization of a 23 chromosome human egg by a 22 chromosome sperm of a closely related species
• D) an error in the alignment of chromosomes on the metaphase plate
• E) lack of chiasmata in prophase I

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Definitions:

Annually

Pertaining to events or actions that occur once every year.

Present Value

The present worth of a future sum of money or sequence of cash payments, reduced at a particular rate of interest.

PV

An abbreviation for present value, referring to the value today of a future payment or series of payments, adjusted for a specific rate of return.

Discount Rate

This rate, integral to discounted cash flow analysis, is employed for determining the present value of cash flows expected in the forthcoming periods.