What do all human males inherit from their mother?
A) mitochondrial DNA
B) an X chromosome
C) the SRY gene
D) A and B only
E) A, B, and C
Ans: D) A and B only
Biology & Microbiology
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Phenotypic differences between humans and chimpanzees may be better explained by the time during development when genes are turned on in humans and chimpanzees, than by genetic differences themselves
A. true B. false
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Ribozymes are enzymes
Indicate whether the statement is true or false.
Biology & Microbiology
The cell plate in dividing plant cells is composed of _____
a. microfilaments b. the cytoplasmic membrane c. vesicles with wall-building materials d. Golgi bodies e. microtubules
Biology & Microbiology
Leading source of lead in U.S.
a. Fuel combustion b. Waste disposal C. Metal processing D. Non-road engines and vehicles
Biology & Microbiology