following a scent; others
are silent. Erect ears and barking are due to dominant alleles located on different chromosomes. A dog
homozygous for both dominant traits is mated to a droopy-eared, silent follower. The phenotypic ratio
expected in the F1 is
a. 9:3:3:1.
b. 100 percent of one phenotype.
c. 1:1.
d. 1:2:1.
e. 3:1.
B
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Select the statements that provide direct biogeographical evidence for evolutionary theory. Check all that apply.
_____ Unrelated organisms from similar habitats exhibit similar characters. _____ Terrestrial mammals are not found naturally on any island greater than 300 miles from a mainland. _____ Organisms on islands are most similar to organisms on the nearby mainland, even when habitats on the mainland and island are quite different. _____ Invasive rats have colonized more than 80% of the world's islands.
The correct sequence of the stages of viral replication is:
a. Attachment - Synthesis - Penetration - Assembly - Release b. Penetration - Attachment - Assembly - Synthesis - Release c. Penetration - Attachment - Synthesis - Release - Assembly d. Attachment - Penetration - Assembly - Synthesis - Release e. Attachment - Penetration - Synthesis - Assembly - Release
Certain orchids produce flowers and secrete scents that resemble female bees so that male bees will mount these
flowers and attempt to copulate with them. This bizarre occurrence is an example of: a. fertilization. b. coevolution. c. apomixis. d. self-pollination. e. asexual reproduction.
What property of water, in which water molecules stick to each other, is responsible for the ability of plants to get water from their roots up to their leaves?
What will be an ideal response?