The genetic determinants for the structural features of bacteria are encoded in:
A. single-stranded DNA.
B. plasmids.
C. double-stranded RNA.
D. chromosomal DNA
Ans: D. chromosomal DNA
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Darwin calculated that if reproduction was not limited, a single pair of elephants would leave roughly ____
descendants after 750 years.
a. 750 b. 15,000 c. 150,000 d. 19 million e. 190 million
Sharks differ from most other fishes in that they lack ____
a. lungs b. scales c. bony skeletons d. paired appendages e. jaws
The probability that two genes will be separated by crossing-over is related to:
a. the phenotype that they control. b. how far the two genes are from the centromere. c. the distance between the two genes on the chromosome. d. whether the two genes are located on a sex chromosome. e. how far the genes are from the kinetochore
What is a social group?
a. Individuals that are always together. b. Conspecific individuals that affect each other's fitness. c. A group that forages together. d. A group that shares communal raising of offspring.