Punnett Square Practice Question Preview (ID: 55709)


Mendelian Genetics Practice. TEACHERS: click here for quick copy question ID numbers.

bb is described as...
a) homozygous dominant
b) heterozygous
c) homozygous recessive
d)

Two parents are Bb for a trait. If the first child has the bb allele combination what is chance the next child will have the bb allele combination?
a) 0%
b) 25%
c) 50%
d) 100%

Tt is described as...
a) homozygous dominant
b) heterozygous
c) homozygous recessive
d)

If red wings is dominant in butterflies, what is the possible genotype combination that will cause the trait?
a) RR and rr
b) RR and Rr
c) only rr
d) Only RR

If the Y allele causes yellow color in daisies and y is white, what is the phenotype of homozygous recessive inheritance?
a) Yy
b) yy
c) yellow flowers
d) white flowers

If curly hair is dominant to straight hair which parents would have 25% chance of having a child with straight hair?
a) Hh x HH
b) HH x HH
c) Hh x HH
d) Hh x Hh

If a cross is RR x Rr, what will the percentage of the offspring will have the Rr genotype?
a) 25%
b) 50%
c) 75%
d) 100%

What is the genotype for a homozygous recessive individual?
a) HH
b) H
c) Hh
d) hh

What is the genotype for a heterozygous individual?
a) G
b) GG
c) Gg
d) gg

GG is described as...
a) homozygous dominant
b) heterozygous
c) homozygous recessive
d)

If a robin is heterozygous for white head feathers has offspring with a homozygous red-head robin. What percentage of the offspring will have the red-head feather allele?
a) 0%
b) 50%
c) 75%
d) 100%

Two heterozygous mice with brown fur have offspring. What percent will have the genotype Bb?
a) 25%
b) 50%
c) 75%
d) 100%

Two heterozygous mice with brown fur have offspring. What percent will have brown fur?
a) 0%
b) 25%
c) 50%
d) 75%

The word phenotype refers to ...
a) The inherited gene combination.
b) Aa
c) An observable trait.
d) 23 chromosome pairs

The word genotype refers to ...
a) The inherited gene combination, Bb.
b) Base pairs on a strand of DNA
c) 23 chromosome pairs
d) A trait like blue eyes.

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