Which would be a fact supporting the hypothesis that echinoderms such as sea stars evolved into radial symmetry from bilateral symmetry?
A) They swim like animals with bilateral symmetry.
B) They use their appendages in a bilateral manner.
C) Their larvae have bilateral symmetry.
D) Their brains show the mirror image development of bilateral symmetry.
Answer: C
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Which of the following statements about Hymenoptera is not correct?
A. They exhibit care of the young with clear and consistent division of labor between reproducer (queen) and non-reproducers (workers). B. Group benefits come from living in and defending the nest. C. Sex determination includes diploid females (queen and workers) and haploid males (drones). D. Degree of relatedness (r) is higher for sister–sister relationships (0.75) than for mother–daughter relationships (0.5). E. In terms of genetic representation in the next generation, it is better for the workers to produce more offspring rather than help the mother produce more sisters.
If the nucleotide sequence in a DNA template strand is GGCTTAACCATT; the complementary mRNA strand will
have the sequence ____________________. Fill in the blank(s) with the appropriate word(s).
While working in the lab, you observe that the only problem within a group of cells is that the cholesterol, lipid, and estrogen production rates have begun to decline. Which organelle would most likely be damaged?
Light rays that pass through the edge of a curved lens will be refracted more than those that pass through the center
Indicate whether the statement is true or false