Direction of shell coiling in the snail Lymnaea peregra is conditioned by a form of extrachromosomal inheritance known as ________
A) independent assortment
B) sex-linked inheritance
C) maternal effect
D) heteroplasmy
E) epistasis
Answer: C
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Actinomycetes are usually found in ________ habitats.
A. marine B. soil C. medical D. freshwater
Which of the following animals has a three-chambered heart?
A) snake B) crocodile C) human D) bird
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Indicate whether the statement is true or false