Question

6 multiple choice 8 points when comparing two family members with different physical appearances (phenotypes), it is assumed that their phenotypes are connected to differences in their dna. which components of the dna are responsible for the phenotype differences between the related individuals? the base pairing rule for the nitrogenous bases is different for the two individuals. the type of sugar that makes up the dna molecule is different for the two individuals. the arrangement of the molecule into a helix is variable between the two individuals. the expression of certain genes on the dna over others is different for the two individuals.

Explanation:

DNA's base - pairing rules are universal (A - T, G - C), the sugar in DNA is always deoxyribose, and the double - helix structure is a common feature of DNA. Phenotype differences between related individuals are due to differential gene expression, where different genes are turned on or off in different individuals.

Answer:

The expression of certain genes on the DNA over others is different for the two individuals.