sasogeek
  • sasogeek
Two parents, John and Laura, had dominant genes for smartness, but a recessive genes for dumbness. Their great grand children were all dumb. what were the genotypes John and Laura's children?
Biology
  • Stacey Warren - Expert brainly.com
Hey! We 've verified this expert answer for you, click below to unlock the details :)
SOLVED
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
jamiebookeater
  • jamiebookeater
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
blues
  • blues
Two alleles of one gene: D = smart and d = dumb. John and Laura are both heterozygous for the allele, Dd. Their children could be DD, Dd, or dd. The problem says that all the children's children are all dumb, so we know they are recessive homozygotes, dd. This could only happen if John and Laura's children were homozygous recessive (dd) and started families with other people who were recessive homozygotes for intelligence.

Looking for something else?

Not the answer you are looking for? Search for more explanations.