In which of the following does the environment play a causal role?

a. Marfan syndrome
b. cystic fibrosis
c. dog coat color
d. sickle-cell anemia
e. depression and schizophrenia


ANSWER: e

Biology & Microbiology

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The wide variety of finches Darwin observed in the Galàpagos was thought provoking to him because they appeared to have descended from __________ population. Today we regard this as an example of ___________

A. the same; adaptive radiation B. more than one; convergent evolution C. the same; convergent evolution D. more than one; adaptive radiation

Biology & Microbiology

Cells at shoot tips maintain their totipotency due to the expression of:

A. meristem identity genes. B. growth regulation genes. C. lateral growth genes. D. S-regulation genes. E. nodal expression genes.

Biology & Microbiology

________ is a measure of the randomness or disorder of a system.

A. Free energy B. Enthalpy C. Entropy D. Synergy

Biology & Microbiology

Which of the following features would disqualify a plant from being classified as a bryophyte?

A. dispersal of gametes by wind B. nonvascular tissues C. presence of flagellated sperm D. ability to reproduce sexually and asexually E. gametophyte is the dominant stage of the life cycle

Biology & Microbiology