If tall (D) is dominant to dwarf (d), and two homozygous varieties DD and dd are crossed, then what kind of offspring
will be produced?
a. all intermediate forms
b. all tall
c. all dwarf
d. 1/2 tall, 1/2 dwarf
e. 3/4 tall, 1/4 dwarf
ANSWER: b
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In DNA replication there are leading and lagging strands, because
A) DNA replication is conservative and a completely new DNA molecule must be made. B) DNA replication is semiconservative and each strand is copied simultaneously in opposite directions. C) the strands of DNA are parallel and are copied in the same direction simultaneously. D) one strand of DNA is copied faster than the other.
Historical data suggest that snowshoe-hare population cycles are caused by Canada lynx predation. Modern research has ________
a. confirmed this hypothesis and shown that lynx starve after having depressed the hare population b. demonstrated that snowshoe hares cycle even in captivity, indicating a genetic basis for variations in density c. as yet been unable to explain the cyclic changes in hare density d. shown that multiple factors, such as raptor predation and plant interactions produce oscillations even in the absence of lynx
Which of the following is an important feature of the scientific method
a) a good hypothesis b) if research results are not conclusive, the opinion of experts should be relied upon c) anyone should be able to repeat an experiment d) a researcher's methods should not be described once desired results have been obtained e) once demonstrated, conclusions cannot be changed
The sequencing method that cuts DNA segments into fragments, arranges those fragments based on overlapping nucleotide sequences, and then clones these fragments is called
A. RFLP sequencing. B. shotgun sequencing. C. clone-by-clone sequencing. D. consensus sequencing.