Guppies were moved from stream A, with a fish that preyed upon adult guppies, to stream B, with a fish that preyed upon juvenile guppies
After 30 to 60 generations, the guppies responded to the increased predation on juveniles relative to adults by A) feeding less frequently.
B) increasing age at maturity.
C) increasing the number of individuals in a school.
D) becoming smaller in body size.
B
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Put the following events of elongation in prokaryotic translation in chronological order. 1. Binding of mRNA with small ribosomal subunit 2. Recognition of initiation codon 3. Complementary base pairing between initiator codon and anticodon of initiator
Put the following events of elongation in prokaryotic translation in chronological order. 1. Binding of mRNA with small ribosomal subunit 2. Recognition of initiation codon 3. Complementary base pairing between initiator codon and anticodon of initiator tRNA 4. Base pairing of the mRNA codon following the initiator codon with its complementary tRNA 5. Attachment of the large subunit A) 1, 2, 3, 4, 5 B) 2, 1, 4, 3, 5 C) 5, 4, 3, 2, 1 D) 1, 2, 3, 5, 4
Alarm calling seems to be an example of _______, that is, it favors relatives.
A. sociology B. demography C. aggression D. kin selection
In polygynous species of animals, males usually choose their mates, and females, because they are smaller and weaker, must comply
Indicate whether the statement is true or false
The zona pellucida
A) allows quick passage of the egg down the oviduct. B) bathes the egg in estrogen. C) is another term for the fertilized egg. D) acts as a binding site for the sperm head.