The scientific study of heredity is called ________.
A. breeding
B. genetics
C. true-breeding
D. heredity
B. genetics
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A researcher is studying several different Rhodnius mutants. One of her mutants only molts normally up until the 2nd nymph stage. After that, insects continue to molt but keep demonstrating body plans of the 2nd nymph stage
What is the likely effect of this mutation in Rhodnius? Choose all that apply. A. The juvenile hormone is not expressed B. The ecdysone hormone is not expressed C. The prothoracicotropic hormone (PTTH) is not expressed D. The juvenile hormone is over-expressed E. The ecdysone hormone is over-expressed F. The prothoracicotropic hormone (PTTH) is over-expressed
The infectious form of Chlamydia trachomatis is a(n)
A. reticulate body. B. elementary body. C. primary element. D. core body.
Rheumatic fever is a sequalae of repeated infection with Streptococcus pyogenes. The pathogenesis involved in this complication is molecular mimicry of the valves of the heart
a. true b. false
During gastrulation, three tissue layers form: the outer __________, the inner __________, and the __________ in between the first two layers.
Fill in the blank(s) with the appropriate word(s).