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WorksheetsHeredity Punnett Squares and Pedigrees
Total questions: 25
Worksheet time: 17mins
Heterozygous is when __________________________.
the alleles are the same
the alleles are different
the alleles are absent
the alleles are present
T - tall and t = short
In the Punnett square shown, what belongs in the missing square?
tt
Tt
Bb
TT
B = brown fur and b = white fur
In the Punnett square, what is the probability for white fur?
0%
25%
50%
75%
Dominant alleles are represented by a _________________.
Male gene
lowercase letter
recessive trait
capital letter
Aa, DD, bB, yy are all examples of _______________.
genotypes
phenotypes
Complex molecules that carry the genetic information that define an organism's traits. It is stored in the nucleus.
DNA
protein
RNA
mitochondria
Dominant alleles are represented by a ________________.
Y chromosome
lowercase letter
recessive trait
capital letter
This is what you see - the physical appearance.
genotype
phenotype
homozygous
heterozygous
B = brown eyes, b = blue eyes
What is true about these two brothers that have brown eyes? One brother is BB and the other is Bb.
They have same phenotype and genotype.
They have different genotypes and phenotypes
They have same phenotype, but different genotypes.
They have same genotype, but different phenotypes.
Which of the following genotypes is homozygous dominant?
A
Aa
AA
aa
Which of the following genotypes is heterozygous dominant?
Bb
BB
bb
B
Which of the following genotypes is homozygous recessive?
Bb
BB
bb
B
Which individual in the first generation is a carrier?
The male.
The female.
Individual #1.
None of the above.
How many males are color-blind in this family?
2
3
4
5
How many females show the trait?
1
2
3
4
How many females are carriers in this family?
1
2
3
4
How many males in this pedigree chart show the trait?
1
2
3
4
