In order to be acted on by sexual selection, what is required of a trait?
A) It must be something that influences mate choice by the opposite sex.
B) It must be something that increases survival.
C) It must be a male trait.
D) It must be a trait that increases fertility.
A
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A(n) ________ is a drug that blocks the function of a metabolic pathway.
Fill in the blank(s) with the appropriate word(s).
Trophic efficiency is _____
A) the ratio of net secondary production to assimilation of primary production B) the percentage of production transferred from one trophic level to the next C) a measure of how nutrients are cycled from one trophic level to the next D) usually greater than production efficiencies E) about 90% in most ecosystems
Four of the five answers listed below are types of gene control in eukaryotes. Select the exception
a. replicational control b. transcriptional control c. translational control d. post-translational control e. transcript processing control
How much Golden Rice will supply a child’s
daily need for the vitamin that is converted from beta-carotene?
a. two teaspoons b. a half of a cup c. one cup d. one quart e. one pint