The process that unites the male gametes with the female gametes in organisms that reproduce sexually is termed
A. conjugation.
B. fertilization.
C. crossing-over.
D. gastrulation.
E. recombination.
B. fertilization.
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Homo erectus:a
was shorter than Homo habilis. b. had a larger brain than Homo habilis. c. had more pronounced sexual dimorphism than Homo habilis. d. was the first member of the genus Homo without pronounced supraorbital ridges. e. did not use tools.
What are LINES?
What will be an ideal response?
What is the best way to promote fusion between two related populations of mosquitofish, one of which lives in a predator-rich pond and the other of which lives in a predator-poor pond?
A) Build a canal linking the two ponds that permits free movement of mosquitofish, but not of predators. B) Transfer only female mosquitofish from a predator-rich pond to a predator-poor pond. C) Perform a reciprocal transfer of females between predator-rich and predator-poor ponds. D) Remove predators from a predator-rich pond and transfer them to a predator-poor pond.
Nucleic acids, proteins, and complex carbohydrates are all produced by
A) hydrolytic reactions. B) dehydration synthesis. C) exchange reactions. D) hydrogen bonding. E) catabolic reactions.