Pairs of alleles are found at a particular ____ on a pair of ____

a. gene; gametes
b. base; homozygous genes
c. nucleotide; genes
d. locus; homologous chromosomes
e. sister chromatid; homologous chromosomes


ANSWER: d

Biology & Microbiology

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Fill in the blank with correct word.

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Large spherical cells of cyanobacteria that are able to fix atmospheric nitrogen are referred to as ________.

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