Different ratios occur in crosses with single gene pairs or two gene pairs. what types of ratios are likely to occur in crosses dealing with a single gene pair?

a) 4: 1, 1: 1, 1: 4: 1
b) 9: 3: 3: 1, 1: 2: 1
c) 1: 1: 1: 1, 1: 4: 6: 4: 1
d) 3: 1, 1: 1, 1: 2: 1

the sugar-phosphate backbone forms the structural framework of nucleic acids, including dna and rna. this backbone is composed of alternating sugar and phosphate groups, and defines directionality of the molecule.

igneous rocks which formed by the crystallization of magma at the surface of the earth called extrusive rocks. they are characterized by fine-grained textures because the rapid cooling at or near the surface did not provide enough time for large crystals to grow.

her next move would be to use agarose gel electrophoresis to separate the dna molecules of varying length and create a dna fingerprint.