Tightly curled hair is caused by a dominant autosomal gene in humans. If a heterozygous curly-haired person marries a person with straight hair, what phenotypes (and in what proportions) are expected in the offspring?
A) 1 curly : 2 straight
B) 3 curly : 1 straight
C) 1 curly : 1 straight
D) 1 curly : 3 straight
E) 2 curly : 1 straight
Answer: C
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A. It contains the polymerase active site. B. It contains the separate exonuclease site required for proofreading. C. It directs the polymerase to bind a specific type of promoter sequence. D. It signals the polymerase to terminate transcription at specific sites. E. It allows template-independent RNA synthesis.
Features that are useful for identification of fungal species include
A. presence of a membrane bound nucleus. B. size, shape color and number of spores. C. ability to produce chlorophyll a. D. All of the choices are correct.
Which of the following is not one of the six major kinds of plant hormones?
a. auxin b. nitrogen oxide c. cytokinin d. gibberellin e. ethylene
Our genetic information will be decided based on the order of nucleotides (G,C,A,T,) in our DNA.
a. true b. false