WorksheetsGenetics
Total questions: 19
Worksheet time: 10mins
What is a trait?
A physical characteristic passed down from your mom
A behavioral characteristic passed down from your dad
A physical or behavioral characteristic passed down from your parents
A behavioral characteristic passed down by your mom
What is an allele?
A trait
Different forms of a gene
DNA
Different types of parents
What is a genotype?
Pair of alleles that determine a specific trait
Observable physical trait
A trait that is observed with only one copy of an allele
What is a phenotype?
Pair of alleles that determine a trait
Observable physical trait
Different forms of a gene
What is a dominant gene?
A trait that is observed when there are one OR two copies of the allele
A trait that is observed only when there are two copies of the allele
A trait that can be hidden in a generation
A person who is homozygous for a trait can have a genotype of....
AA, Aa
Aa, aa
AA, aa
aa
If a person is heterozygous for a trait, their genotype can be...
Aa
AA, aa
AA, Aa
AA
If "B" represents brown hair, and "b" represents blond hair, what will the genotype be for a homozygous brown haired person?
BB
Bb
bb
If "B" is brown and "b" is blond, what is the phenotype of someone who's genotype is "bb"
Brown Hair
Blond Hair
Red Hair
If a person is heterozygous for brown hair, what is their genotype?
BB
Bb
bb
Heterozygous: Different, Homozygous:_____________
The same
Less Than
Greater Than
4 copies
Natural or Artificial Selection: A dog breeder selects two dogs that are best at herding animals to breed
Natural
Artificial
This type of disease CANNOT be spread from person to person
Contagious
Infectious
Genetic
P= purple petals and p= white petals. What genotype(s) would result in purple petals?
pp
Pp, pp
PP, Pp
PP, pp
Natural or Artificial? Birds have a variety of beak sizes to help harvest different seeds
Natural Selection
Artificial Selection
How many copies of the recessive gene must there be for that phenotype to show up?
1
2
3
4
What is the missing pairing?
AA
Aa
aa
Using the Punnett Square, identify the correct Genotypic ratio
2:2:1
1:2:1
2:1:1
1:1:1
Based on the missing letter, what is the parent's genotype?
AA
Aa
aa
