In dandelions, female gametophytes and their eggs are ________ because during megaspore generation, homologous chromosomes do not pair and ________ does not occur.
A. haploid; meiosis II
B. diploid; meiosis I
C. haploid; meiosis I
D. diploid; meiosis II
Answer: A
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A) Plasmids are always small, linear pieces of DNA. B) Plasmids are composed of single-stranded DNA. C) Plasmids contain genes that are NOT essential for cellular growth and replication. D) Plasmids carry unimportant genes that are of little significance for the ecology and metabolism of an organism.
The presence of the strongest competitors in
the center of a group of animals may qualify the group for status as a(n) a. altruistic society. b. selfish herd. c. kin group. d. dominance hierarchy. e. sexual selection society.
In the absence of ATP, a contracted muscle can't relax
Indicate whether the statement is true or false
A ________ forms when an acellular slime mold is exposed to dry conditions or starvation
A) fruiting body B) water mold C) cellular slime mold D) plasmodium