Choose the mRNA sequence that is complementary to the gene sequence GGACTTACG.
A. CCTGAATGC
B. AACUGGCUA
C. GGTCAATCG
D. CCUGAAUGC
Ans: D. CCUGAAUGC
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One characteristic of continuous variation is that ____
a. traits are usually quantified by counting b. only a single gene pair contributes to the phenotype c. individual genes have a large effect on the phenotype d. phenotypic expression varies across a wide range e. it is best analyzed in individuals rather than in populations
What region of the 5-week embryo gives rise to the midbrain?
a. telencephalon b. diencephalon c. mesencephalon d. metencephalon e. myelencephalon
How do Ctenophora differ from Cnidaria?
a. They have a true coelom. b. They are non-motile. c. They have rotation symmetry. d. They have bi-radial symmetry.
To get cancer, you usually need ____ mutation(s) in a single cell.
A. just 1 B. 4 or more C. 10 or more D. 100 or more