Two individuals with the same genotype may not express the same phenotype because gene expression is influenced by:
A. other genes alone.
B. the environment alone.
C. a combination of genes and environment.
D. genes alone in some people and the
environment alone in other people.
E. none of these
C
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A CpG island is: (Select all correct choices)
A. a cluster of alternating C and G bases in a small region near or in the promoter site of a gene. B. a cluster of alternating C and G bases found anywhere along a DNA strand. C. a cluster of alternating C and G bases found near bacterial operons.
Which type of membrane protein will bind to a signal molecule?
a. passive transporter b. enzyme c. adhesion d. receptor
Explain how the presence of Pangea relates to the fact that most marsupials are found in Australia
What will be an ideal response?
Which is an example of the Red Queen hypothesis?
a. As spiders evolve resistance to a viral disease, the virus becomes more virulent. b. Dogs evolve characteristics that are selected by humans. c. Dinosaurs lack the adaptations to survive predation of their eggs by small mammals. d. Horses evolve from a five toed animal to one toe. e. Cats and cows separately, but for similar purposes, evolve scratchy tongues.