Which of the Following Prevents Polyspermy

question 141

Multiple Choice

Which of the following prevents polyspermy?

• A) inactivation of sperm -binding proteins in the zona pellucida and hardening of the zona pellucida
• B) sealing of the corona radiata and hardening of the zona pellucida
• C) release of toxins to sperm by the fertilized ovum and hardening of the zona pellucida
• D) sealing of the corona radiata and release of toxins to sperm by the fertilized ovum
• E) inactivation of sperm -binding proteins in the zona pellucida and release of toxins to sperm by the fertilized ovum

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Definitions:

Main Effect

In statistical analysis, the direct impact of an independent variable on a dependent variable, disregarding the influences of or interactions with other variables.

Reject

In statistics, to refuse the null hypothesis based on evidence from sample data meeting a predetermined significance level.

Interaction Effect

In statistics, the effect that an independent variable has on the outcome variable depends on or varies according to the levels of one or more other independent variables.

F-Ratio

A statistical value used to compare variances in ANOVA tests, determining if there are significant differences between group means.