Explain how hagfish are still able to consume their dead or dying prey, even though hagfish lack jaws
What will be an ideal response?
Hagfishes rely on sharp teeth located on their tongues for rasping away at the flesh of their food. They also use knot-tying as a means of providing leverage for tearing off bits of flesh.
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____ is the process by which researchers identify various types of sequences
Fill in the blank with the appropriate word.
Which of the following is not true of telomerase function?
A. Telomerase carries a 9-base DNA template complementary to 1.5 repeat units of the telomere sequence. B. One strand of the telomere sequence is elongated 6 bp at a time. C. The telomerase repeats its reaction many times in one telomere-binding event. D. The telomeres extended 3' end is made double-stranded by lagging strand synthesis. E. The RNA template is repositioned after each extension of the 3' end.
__________, or four-legged walkers, evolved from
lobe-finned bony fishes. Fill in the blank(s) with the appropriate word(s).
Four of these statements about master genes are true. Which statement is not true?
A. They orchestrate layers of development. B. They are highly conserved over evolutionary time. C. Mutations within these are frequently devastating. D. They are highly variable in their sequences between species. E. Mutations usually result in changes in body plan.