Punnett Squares and Pedigrees

Front

Aa, DD, bB, yy are all examples of

Back

genotypes

Front

AA and Aa always show up as

Back

dominant

Front

What ratio of the offspring from the cross shown will be homozygous recessive for the trait of tallness? Options: 0 in 4, 1 in 4, 2 in 4, 4 in 4

Back

0 in 4

Front

Which of the following genotypes is homozygous dominant? Options: A, Aa, AA, aa

Back

AA

Front

Which of the following genotypes is heterozygous? Options: Bb, BB, bb, B

Back

Bb

Front

In a pedigree, what shape represents a male? Options: circle, square, triangle, diamond

Back

square

Front

In a heterozygous genotype, the ___________ allele takes over in the phenotype.

Back

dominant

Front

What you see, or the physical appearance.

Back

Phenotype

Front

T - tall and t = short
In the punnett square below, what belongs in the missing square?

Back

tt

Front

B = brown eyes
b = blue eyes
What is true about these two brothers that have brown eyes?
One has genotype BB the other Bb.

Back

they have same phenotype but different genotypes