The distinctive feature of chloroplasts is that they contain a green pigment called:
A. Gram stain.
B. hemoglobin.
C. chlorophyll.
D. chromatin.
E. keratin.
Answer: C
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In Mendel's experiments on seed color in pea plants, when a dominant yellow seed-bearing plant was crossed with a recessive green seed-bearing plant, what was the approximate phenotypic ratio among the F2 generation?
A. 1 yellow: 3 green B. 1 yellow: 1 green C. 3 yellow: 1 green D. all yellow E. 9:3:3:1
Cancer cells are cells that
A. divide uncontrollably. B. can spread from their site of origin to other parts of the body. C. create their blood supply. D. can interfere with vital body functions. E. All of the answer choices are correct.
Hamilton explained the origin of altruism in selected insect societies with his kin selection model of sex determination. Since males are haploid and females are diploid, the workers share a very high proportion of alleles, theoretically as high as 75%. What is this called?
A. diploidy B. haploidy C. haplodiploidy D. parthenogenesis E. altruism
The cell also lacks F factors and F plasmids. Upon its death, this bacterium should be able to participate in _____
A) conjugation B) transduction C) transformation D) conjugation and transduction