How many nucleotide bases are found in the code for each amino acid?

a. 2
b. 3
c. 4
d. Varies with the particular amino acid


Ans: b. 3

Biology & Microbiology

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In this equation p2 + 2pq + q2 = 1, what does the term 2pq represent?

A. The genotype frequency of homozygous recessive individuals B. The genotype frequency of homozygous dominant individuals C. The genotype frequency of heterozygous individuals D. The sum of the phenotype frequencies in the population

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Asteroids that cross Earth's orbit and could hit Earth are known as _____________

Fill in the blank(s) with correct word

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The Gram stain distinguished bacteria into two types of cells. This stain is dependent on the amount of in the cell wall.

A. glucose B. a complex lipid C. cellulose D. peptidoglycan E. chitin

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In which phase of meiosis does crossing-over take place

A) Prophase I B) Prophase II C) Metaphase I D) Metaphase I

Biology & Microbiology