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67 points plus brainlest if done correctly. i will report you if you answer 3 or less of the questions, also must post all the answers at the same time.
21.
what explains why human eyes come in a variety of colors?
many phenotypes have pairs of alleles.
multiple genes each have only one allele.
multiple alleles result in many phenotypes.
different phenotypes result in different genes.
22.
adults with down syndrome can often find work because they have received
folic acid
physical therapy
genetic counseling
education and job training
23.
which describes a karyotype?
a picture of the chromosomes in a cell
fluid that surrounds a baby before it is born
a picture of a baby before it is born
a sex-linked genetic disorder
24.
traits that are controlled by many different genes have
two distinct phenotypes
only one phenotype
many different phenotypes
a couple of phenotypes
25.
what controls variations in skin color among humans?
a person’s diet
multiple alleles of a single gene
two alleles of a single gene
many genes
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