Which of the following describes the sequence of events that occurs during DNA replication of a double-stranded DNA molecule?
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In an inducible operon, the regulator gene codes for a repre…
In an inducible operon, the regulator gene codes for a repressor protein that binds to the operator. When an inducer is present, the
The enzyme, ribulose bisphosphate carboxylase, catalyzes the…
The enzyme, ribulose bisphosphate carboxylase, catalyzes the first step in carbon dioxide fixation. The substrates for this enzyme are
Chromosomal abnormalities such as Down Syndrome (trisomy 21)…
Chromosomal abnormalities such as Down Syndrome (trisomy 21) and Klinefelter Syndrome (XXY) result from errors in
DNA is usually found in a double-stranded state. The two str…
DNA is usually found in a double-stranded state. The two strands are held together by
The next question refers to the following mRNA (messenger RN…
The next question refers to the following mRNA (messenger RNA) sequence (below) and the universal genetic code shown (below). 5′ – ACUACCGGCCCCCGG – 3′ The first and last amino acids coded for by this mRNA sequence are
A tetrahybrid cross is made between pea plants of genotypes…
A tetrahybrid cross is made between pea plants of genotypes AABBccdd and aabbCCDD. (Note that dominant alleles are represented by capital letters, recessive alleles by lower case letters, and the genes are unlinked.) The F1 plants were allowed to self-pollinate. What proportion of the F2 plants would be expected to express all four dominant traits?
A possible pathway of electron movement in the light reactio…
A possible pathway of electron movement in the light reactions of photosynthesis is
In tomato plants, genes D (for tall plants) and P (for smoot…
In tomato plants, genes D (for tall plants) and P (for smooth skin) are linked. If a tomato plant with the genotype DdPp is crossed with a ddpp (dwarf and hairy) plant, what types of offspring may be expected if NO crossing over occurs?
The primary advantage of aerobic respiration over glycolysis…
The primary advantage of aerobic respiration over glycolysis, when it can be carried out, is that aerobic respiration