Which of the following is the best definition of
sympatric speciation?
a. species that evolve due to geographical
distance
b. mechanical isolation acts to prevent
speciation
c. breeding behavior that prevents the
organisms from breeding due to differences
in their breeding time
d. ecological isolation
e. evolutionary change that creates two
species occupying the same space
E
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True or false: The specialized salt glands that allow marine birds to drink sea water are found in the nasal cavity; in humans, these glands are found in the esophagus
A. true B. false
Sickle cell anemia is a recessive trait in humans. In a cross between a father who has sickle cell anemia and a mother who is heterozygous for the sickle cell allele, what is the probability that all of their first three children will be unaffected?
A) 1/4 B) 1/2 C) none D) 1/8 E) 1/16
What is the term for the daughter strand synthesized continuously during DNA replication?
What will be an ideal response?
What type of bond forms between amino acids at the ribosome during translation?
A) peptide B) ester C) phosphodiester D) hydrogen