The figure above depicts the result of an experiment to determine how DNA replication occurs. Based
on these results, it appears that after replication each DNA molecule is made of
a. either entirely old DNA strands or entirely new DNA strands.
b. one old DNA strand and one new DNA strand.
c. entirely new DNA.
d. some DNA helix regions that are old DNA, alternating with some DNA regions that are
new DNA.
e. two strands that are each a mix of old and new DNA.
B
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If this molecule is destined to deliver an arginine to a ribosome for incorporation into a growing polypeptide, which one of the following 3' to 5' sequences would not be found in the region labeled (C)?
A. GCA B. GCC C. UCU D. AGG E. UCC
The majority of mitochondrial proteins are manufactured under the direction of the nuclear DNA by cytoplasmic ribosomes.
Answer the following statement true (T) or false (F)
In poultry, rose comb is controlled by a dominant
allele, and its recessive allele controls single comb. (a) Give the genotype and phenotype produced from crossing a pure-breeding rose comb chicken with a pure-breeding single comb chicken. (b) Give the results of the backcross of the F1 hybrid with both pure-breeding parents. What will be an ideal response?
The fluid that surrounds all the cells of the body is called interstitial fluid.
a. true b. false