Populations of endotherms that live in colder climates tend to have shorter ears and limbs than populations of the same species in warm climates. This is called ________ Rule.
A. Allen's
B. the r-Selected
C. the K-Selected
D. Edward's
Answer: A
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A bell-shaped curve of phenotypic variation is
indicative of a. incomplete dominance. b. continuous variation. c. multiple alleles. d. epistasis. e. environmental variables on phenotypes
The zygote is converted into the morula in the ____
a. ovary b. uterus c. vagina d. oviduct e. cervix
Performing a complementation test through cotransduction using mutant phage genomes created by X-ray mutagenesis (mutants a-e), as well as ones created by chemical mutagenesis using EMS (mutants 1-5), you get the following results: 1 2 3 4 5
a — + + — — b — + — — — c + + — — + d + — + + — e — — + + — Explain this data.
If gross primary production were to increase in an ecosystem, it would be reasonable to expect that
A. the trophic web would become more complex. B. nutrients would no longer be limiting factors. C. cellular respiration would decrease. D. the biomass of herbivores would increase. E. net primary production would not increase.