Females outnumber males in the tertiary sex ratio because genetic and ____________________ factors cause higher death rates among males
Fill in the blank(s) with correct word
environmental
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Which of the following is true of the leucine-zipper structural motif?
A. It contains several evenly spaced leucine residues that make specific DNA contacts. B. It is made up of a single alpha-helix. C. It is often used to mediate protein-protein interactions. D. It is only found in bacterial proteins.
The cervix is part of the:
a. vulva b. ovary c. uterus d. oviduct e. vagina
How many hydrogen molecules are released in glycolysis?
What will be an ideal response?
Which of these conditions should completely prevent the occurrence of evolution in a population over time?
a. All phenotypic variation between individuals is due only to environmental factors b. the population lives in a habitat where there are no competing species present c. the population size is large d. The environment is changing at a relatively slow rate