The larvae of some insects are merely small versions of the adult, whereas the larvae of other insects look completely different from adults, eat different foods, and may live in different habitats. Which of the following most directly favors the evolution of the latter, more radical, kind of metamorphosis?

#Question id: 3698

#Section 3: Genetics, Cellular and Molecular Biology

In this diagram of the process of DNA replication at a replication fork, the strand labeled B is the:

#Question id: 3699

#Section 3: Genetics, Cellular and Molecular Biology

In this diagram of the process of DNA replication at a replication fork, the black boxes labeled D and E are:

#Question id: 3700

#Section 3: Genetics, Cellular and Molecular Biology

In the Meselson-Stahl DNA replication experiment, if the cells were first grown for many generations in 15N containing media, and then switched to 14N containing media, what percent of the DNA had 1 light strand and 1 heavy strand after 2 generations of growth in 15N growth media?

#Question id: 3701

#Section 3: Genetics, Cellular and Molecular Biology

Frederick Griffith accidentally discovered transformation when attempting to develop a vaccine for pneumonia. He injected mice with samples from S-strain (virulent) and/or R-strain (nonvirulent) pneumococci bacteria (Streptococcus pneumoniae). Which of the following results is NOT consistent with Griffith's experiments?

#Question id: 3702

#Section 3: Genetics, Cellular and Molecular Biology

For the DNA strand 5'-TACGATCATAT-3' the correct complementary DNA strand is:

#Question id: 3706

#Section 3: Genetics, Cellular and Molecular Biology

During the elongation stage of DNA replication