Question

in genetic engineering
choose one option
a scientists add or change the genes on a chromosome
b natural selection is used to determine which traits to keep or eliminate
c dominant and recessive genes are mixed together randomly
d mitosis divides a cell into two equal parts

Explanation:

• Option A: Genetic engineering involves manipulating genes, so adding or changing genes on a chromosome fits.
• Option B: Natural selection is part of evolution, not genetic engineering.
• Option C: Random mixing of dominant/recessive genes is more about inheritance, not genetic engineering.
• Option D: Mitosis is cell division, not related to genetic engineering.

Answer:

A. scientists add or change the genes on a chromosome