Plant roots that are in a horizontal position grow down because:
A. Cells on the upper side elongate more than those on the lower side.
B. Auxins are stimulating cells on the lower side to elongate more.
C. Auxins are being pulled to the upper side.
D. Auxins are having no influence on this process.
E. Statoliths are pushing auxins to the upper side.
A. Cells on the upper side elongate more than those on the lower side.
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What patterns in a pedigree characterize a trait determined by the mitochondrial genome?
A. All offspring of an affected female show the trait. B. Males are never affected. C. Males never transmit the trait to their offspring. D. All offspring of an affected female show the trait, and males are never affected. E. All offspring of an affected female show the trait, and males never transmit the trait to their offspring.
Peritonitis is potentially linked to problems in
What will be an ideal response?
A testcross is performed on an individual to examine three linked genes. The most frequent phenotypes of the progeny were Abc and aBC, and the least frequent phenotypes were aBcand AbC. What was the genotype of the heterozygous individual that is test-crossed with the correct order of the three genes?
A. BAC/bac B. Abc/aBC C. bAc/BaC D. aBc/AbC E. bcA/BCa
An example of a primary consumer would be a
A. cow. B. tiger. C. mushroom. D. dog. E. None of the above.