What allows humans to have different traits from each other?

a. they have different numbers of chromosomes.
b. they have different genes.
c. they store dna in different places.
d. they have different haploid numbers.

Which of these statements is true about autotrophs, but not heterotrophs? a. they use sugar and oxygen to make carbon dioxide and water.b. they use chlorophyll and oxygen to make carbon dioxide and water.c. they use sunlight, water, and carbon dioxide to make sugars.d. they use sunlight, water, and oxygen to make chlorophyll.