Genetic diversity arises as a consequence of ________, which produce(s) different alleles of a gene.
A. crossing over
B. chromosome segregation
C. gene swapping
D. gene splicing
E. mutations
Answer: E
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The separation of homologous chromosomes is called
A. synapsis. B. segregation. C. mitosis. D. fertilization.
Which of the following hormones are believed to be involved in abscission?
A. gibberellin B. ethylene C. auxin D. All of the answer choices are correct.
________________ are cytoplasmic extensions, not found in sensory neurons, that receive chemical signals from other neurons and convert them to electrical signals.
Fill in the blank(s) with the appropriate word(s).
The green algae are believed to share a common ancestor with plants because __________.
a. they are the only multicellular algal protists b. they do not have flagellated gametes c. they are the only protists with plastids that evolved from cyanobacteria d. their chloroplasts are similar in structure and pigment composition to those of plants e. several green algal groups are terrestrial