The physical appearance of an organism for a given trait is known as:
a. genetics.
b. dominance.
c. synapsis.
d. genotype.
e. phenotype.
e
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Some anoxygenic photosynthetic bacteria use ________ as their electron source.
A. sulfur B. hydrogen C. hydrogen sulfide D. All of these choices are correct.
Muscular dystrophy is caused by a mutation in dystrophin, and intracellular protein that binds to the cytoskeleton. Dystrophin also binds to __________, which is found in the plasma membrane of the cell and binds the extracellular matrix.
A. a cadherin B. a gap junction C. a tight junction D. an actin filament E. an integrin
What is the structure in the accompanying figure labeled as 8?
a. seed b. zygote c. endospore d. pollen grain e. microsporocytes
Which is incorrect about restriction enzymes?
A. They were discovered by Werner Arber and Hamilton Smith in 1960s. B. They are found in bacteria and eukaryotes. C. They are key tools that make genetic engineering possible. D. A specific enzyme will always cut at the same sequence.