Midterm Question #1

pdf

School

University of California, Santa Barbara *

*We aren’t endorsed by this school

Course

00174

Subject

Anthropology

Date

Dec 6, 2023

Type

pdf

Pages

Uploaded by PrivateGorilla5880

1. Reproductive-aged women need more vitamin D than men. The reason is clear: Bone growth and health are critically dependent on vitamin D, and moms must build the skeletons of their fetuses—a selection pressure that never affects men. Interestingly, when women are pregnant they often experience significant hair loss, especially on their heads. You are asked to consider whether or not this maternal hair loss is a facultative adaptation. A. In general, what are facultative adaptations, and what do they do? (You may give an example but, by itself, an example is not the general answer you are asked to provide.) [2] Facultative adaptations are when selection builds key environmental challenges that vary within the lifetimes of individuals. B. How do facultative adaptations evolve? Is it by the same or a different process than the way non-facultative (obligate) adaptations evolve? [1] Facultative adaptations evolve to environmental challenges that occur within the lifetime of an individual. Non facultative adaptations can occur through the sequential fixation of mutations in small populations. C. Is hair loss in pregnant women a facultative adaptation? Defend your answer. [2] Yes, because hair loss during pregnancy is an environmental challenge that women are faced with. D. If it were not a facultative adaptation, what other kind of environmental effect might it be? [1] If it were not a facultative adaptation I think that hair loss among pregnant women could also just be a hormonal shift. E. What kind of evidence would be helpful in deciding whether or not an environmentally induced change is a facultative adaptation? Why is that relevant evidence? [2] Knowing the process of the adaptation and if it follows the same rules as facultative adaptations.

Discover more documents: Sign up today!

Unlock a world of knowledge! Explore tailored content for a richer learning experience. Here's what you'll get:

Access to all documents
Unlimited textbook solutions
24/7 expert homework help

Midterm Question #1

Related Documents