Answer: option B) A gene can take different forms called alleles.
Explanation:
An allele is one of the two or more different forms of the same gene.
For example, a trait such as seed shape is represented expressed a gene, but with allele of "RR" (round seeds) and "rr"(wrinkled seeds) observed physically by the farmers.
Thus, the correct answer is that a gene can take different forms called alleles.
The sugar and phosphate portion of the nucleotides are found as segments of the rails on the DNA twisted ladder.
The answer to this question is 1.DNA because RNA is single stranded.
Prior knowledge
Hope I helped! ( Smiles )
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