What Prevents a Foreign Species' Sperm from Fertilizing an Egg

question 63

Multiple Choice

What prevents a foreign species' sperm from fertilizing an egg?

• A)Nothing prevents fertilization if chemical and other behavioral cues allow mating
• B)Egg recognition proteins on the acrosomal process bind to specific sperm receptors on the vitelline envelope
• C)The size and shape of sperm must fit the hole in the egg membrane
• D)The cortical reaction by the egg actively draws in the sperm

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Definitions:

Operating Income

Earnings from a company's core business operations, excluding income from investments and after operational expenses have been deducted.

Support Department Allocations

The process of distributing the costs of support departments (such as HR and IT) to producing departments based on predetermined criteria.

Operating Income Before

An earnings before interest and taxes measure that evaluates a company's profit from operations before the impact of financing and tax expenses.

Operating Income Before

Income derived from regular business operations before deductions such as interest and taxes.