Which of the following is a question which science cannot answer? Why does the moon have different phases?
What will be the date when the sun burns out?
How do green plants make their own food?
How long does it take for the earth to orbit the sun?

What would be the result if crossing over did not happen during meiosis in humans? a. there would be less genetic variation in humans. b. parents would be more likely to look like their children. c. the human population could not reproduce. d. children would have more chromosomes.

Amines amides and amino acids are categories of

Genes that come together with different alleles are heterozygous. homozygous. genotype. segregated.