Most mutations that affect developmental regulatory genes are ________________.
Fill in the blank(s) with the appropriate word(s).
lethal
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Osmosis transports water across membranes using ________.
a. aquaporins b. exocytosis c. endocytosis d. facilitated diffusion e. none of the above
During a DNA sequencing experiment, the researcher adds all the required components to the reaction but accidentally
adds only one of the four dideoxynucleotides, the ddC. What products will be observed after this reaction is complete?
a. All fragments will end in A. b. All fragments will end in C. c. All fragments will end in G. d. All fragments will end in T. e. No fragments will be made.
A classic example of imprinting is _____
a. Pavlov’s dog b. a sparrow singing a song c. Lorenz and his geese d. a cuckoo bird being a “brood parasite” e. watching television
Which of the following is NOT a part of the male human reproductive system?
A. seminiferous tubules B. vas deferens C. cervix D. penis