The fact that chromosomes should become shorter and shorter with each round of cell division is referred to as the ________.
a) the end-replication problem
b) the replication paradox
c) the truncated end problem
d) shortening contradiction
e) the short end hypothesis
Ans: a) the end-replication problem
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In DNA molecules, _____
a. the nucleotides are arranged in a linear, unbranched pattern b. the nitrogenous bases are found on the outside of the molecule c. the phosphate-sugar pattern runs the same way on each DNA strand d. the backbone is internal to the molecule e. the pairing of bases is non-specific
Height in tobacco plants is controlled by _____ gene pair(s) while height in peas is controlled by _____ gene(s)
1.one / many
2.one / two
3.two / four or more
4.two or more / one
Specificity refers to ____
a. the ability of MHC markers to identify foreign cells b. the ability of macrophages to destroy bacteria c. the ability of the complement system to form membrane attack complexes d. the formation of specific receptors on T and B cells e. the formation of specific memory cells after an infection
Analysis of neutral mutation rates to answer interesting questions such as "When did humans begin to wear clothes?" relies on the ________ [two words] hypothesis, which states that molecular traits change at a steady rate
Fill in the blank(s) with correct word