The ureters connect the:a
bladder to the body exterior.
b. kidney to the bladder.
c. bladder to the urethra.
d. kidney to the body exterior.
b
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The condition sickle cell anemia is due to
A) the insertion of an amino acid. B) the deletion of an amino acid. C) substitution of an amino acid. D) failure to synthesize a hemoglobin molecule. E) deletion of the ?-chain hemoglobin gene.
Currently, two extant elephant species (X and Y) are placed in the genus Loxodonta, and a third species (Z) is placed in the genus Elephas. Thus, which statement should be true?
A. Species X and Y are not related to species Z. B. Species X and Y share a common ancestor that is still extant (in other words, not yet extinct). C. Species X and Y are the result of artificial selection from an ancestral species Z. D. Species X and Y share a greater number of homologies with each other than either does with species Z. E. Species X, Y, and Z share a common ancestor, but nothing more can be claimed than this.
The scapula and clavicle are part of the axial skeleton.
a. true b. false
Consider the case of X-linked inheritance of a recessive mutant allele. Among progeny from a cross of an unaffected male and a heterozygous female carrier,
A: all male offspring of would show the trait. B: all female offspring who receive the recessive mutant X would show the trait. C: all male offspring who receive the recessive mutant X chromosome would show the trait. D: all female offspring would be carriers. E: roughly half of the female offspring would show the trait.