Infertility Due to Blocked Fallopian Tubes Is Most Commonly Caused

question 12

Multiple Choice

Infertility due to blocked Fallopian tubes is most commonly caused by which of the following?

• A) untreated sexually transmitted infections that lead to pelvic inflammatory diseases
• B) irregularity of a woman's menstrual cycle
• C) sperm cells that cannot swim well enough to move up the Fallopian tubes
• D) a zygote that fails to implant on the uterine wall

---

Definitions:

Adaptation

The process by which organisms adjust to new environments or to changes in their current environment, enhancing survival and reproduction.

Pseudopenis

An enlarged and erectile clitoris present in some female mammals, resembling a penis, notably observed in spotted hyenas.

Extra-androgen Hypothesis

A theory suggesting that higher levels of androgens (male sex hormones) in certain individuals can lead to more aggressive or dominant behaviors, potentially influencing mating success.

Honest Signal

In behavioral ecology, a trait that provides accurate information about an individual's quality, condition, or intentions to other organisms.