Summer 2023 EOC Prep - Genetics Pretest

different versions of genes

• gene

• allele

• genotype

• phenotype

a specific portion of DNA that codes for a particular protein

• gene

• allele

• genotype

• phenotype

the genetic makeup of an organism (the alleles an organism has)

• gene

• allele

• genotype

• phenotype

made up by the physical characteristics coded for by the genotype

• gene

• allele

• genotype

• phenotype

Which ones are homozygous dominant genotypes?

• AA

• Gg

• KK

• mm

• Rr

Which ones are heterozygous genotypes?

• ee

• Ff

• HH

• mm

• Uu

Which ones will show dominant phenotypes?

• AA

• Dd

• EE

• ff

• ss

Which ones will show recessive phenotypes?

• aa

• Gg

• FF

• kk

• Ss

Having freckles is a dominant trait in humans.  A girl has freckles, but her brother does not. What do we know for certain about the parents?

• both parents have at least one recessive allele

• both parents are heterozygous for freckles

• one of the parents does not have freckles

In humans, freckles (F) on the skin are dominant to no freckles (f).  If a heterozygous parent and a recessive parent conceive, what is the chances of having a child with NO FRECKLES?

• 0%

• 50%

• 100%