WorksheetsPunnett Squares, Pedigrees and Natural Selection
Total questions: 20
Worksheet time: 20mins
Which of the following is a PHENOTYPE?
Red hair
Heterozygous
Lowercase letter
Recessive trait
Capital letter
Which of the following correctly states the genotype probabilities for the offspring of the parents shown in this punnett square?
50% heterozygous 50% homozygous dominant
50% heterozygous 50% homozygous recessive
50% heterozygous 25% homozygous recessive 25% homozygous dominant
100% heterozygous
How many alleles does a child get from each parent for a trait?
1
2
3
4
The genetic makeup of an organism usually represented by alleles. (Ex. AA, Aa, or aa)
Genotype
Phenotype
Heterozygous
Homozygous
What color eyes do the parents have?
They both have blue
They both have brown
One has blue and one has brown
Depends on how the genetics work together
How many individuals are there in the 3rd generation?
1
2
4
6
If this pedigree shows a recessive disorder, what MUST the genotype of individual 4 be?
HH
Hh
hh
A variation is . . .
when organisms have camouflage like spots or stripes
an organism from a different dimension
when you order different food than your friend
differences between organisms in the same species
Charles Darwin observed several different types of finches. Why are there so many different types?
Variations are caused by . . .
Kaleidoscopes
Variety Shows
Mutations
A change in phenotypic expression
A fox with thicker fur than average would have a survival advantage over other foxes if:
There is more competition for food in the fox population.
The air temperature significantly decreases in winter.
A drought occurs, limiting the amount of water available.
A new disease appears that infects the foxes.
