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Dominant: the more common trait (brown hair)

Recessive: a trait that doesn't show up unless both parents carry it (blue eyes)

Co- dominant: both traits show up and co- exist (AB blood)

Incomplete dominance: when a dominant gene does not completely mask a recessive gene so they blend (pink flower)

Phenotype: physical trait- able to be seen (stripes on a zebra)

Genotype: genetic makeup of an organism - genetic trait

Hetrozygous: different (Bb)

Homzygous dominant: same and dominant (bb) and (BB)

Purebred: same as homzygous- has same alleles (bb) and (BB)

Hybrid: also known as heterozygous traits

1.

75%

25%

orange (AA) blue (aa)

2 orange Aa

2.

0%

100%

Hetrozygous

a

explanation:

if the type of the food available changes, then the frequency of beak types will change, because birds with beaks more suited to the available food will be more successful over time.