"Total ridge count" is

A) a multifactorial trait that considers the number of ridges in whorls, loops, or arches of the finger pad skin.

B) a single gene trait that counts the number of ridges in the small intestine.

C) the number of wives of Ridge Forrester, a character on "The Bold and the Beautiful."

D) a polygenic trait that considers the number of lines of pigment in the irises.


A) a multifactorial trait that considers the number of ridges in whorls, loops, or arches of the finger pad skin.

Biology & Microbiology

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If the genus Quercus (oaks) is monophyletic, then this means that all species of oaks

A. grow in similar habitats. B. are morphologically very similar. C. are descended from a common ancestor. D. cannot be classified in a single family or order. E. have undergone horizontal gene transfer sometime in their evolutionary history.

Biology & Microbiology

The majority of oxygen in earth's atmosphere is a product of photosynthesis by ________.

A. agricultural lands B. green plants C. rain forests D. microorganisms

Biology & Microbiology

Countercurrent flow of water and blood increases the efficiency of gas exchange in _____

a. fishes c. birds b. amphibians d. all of these

Biology & Microbiology

The energy released by ________ reactions is used to regenerate ________ which can then provide energy for ________ reactions.

A. anabolic, ATP, catabolic B. catabolic, glucose, anabolic C. anabolic, NADH, catabolic D. catabolic, ATP, anabolic

Biology & Microbiology