The failure of a seedling to turn green if grown in the dark is an example of:
a) incomplete dominance.
b) interaction between codominant alleles.
c) a lack of the chroloplast gene.
d) pleiotropy.
e) interaction between genotype and environment.
Ans: e) interaction between genotype and environment.
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Bioinformatics includes _____. I. using computer programs to align DNA sequences II. creating recombinant DNA from separate species III. developing computer-based tools for genome analysis IV. using mathematical tools to make sense of biological systems
A) I and II B) II and III C) II and IV D) I, III, and IV
Over the last several decades, what have researchers discovered about atmospheric CO2 levels?
A. They have collectively decreased. B. They have collectively increased. C. They have remained the same. D. They increased for a period, but have now stabilized.
The white blood cells that may connect the nervous
and immune systems are the a. neutrophils. b. macrophages. c. mast cells. d. eosinophils. e. lymphocytes.
Which of the following allows energy to be used by living things?
a. It cannot cause changes. b. It can be reflected. c. It has no mass. d. It can interact with matter.