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WorksheetsGenetics Quiz - Heredity
Total questions: 25
Worksheet time: 19mins
What is a phenotype?
possible combinations of alleles in a gene
physical expression of a gene
whether an allele is dominant or recessive
Which of the following allele combinations is homozygous?
Aa
AA
Which of the following allele combinations is heterozygous?
Aa
AA
Which of following is homozygous recessive?
Aa
AA
aa
What do you call an allele that shows its trait even when only 1 copy is present?
recessive
hidden
dominant
active
If black fur (F) is dominant and orange fur (f) is recessive, what is this kitten's genotype?
Ff
FF
ff
orange
black
A variation of a gene is called ________.
a gene
an allele
a phenotype
a chromosome
Brown hair (B) is dominant to blonde hair (b). What is the probability that two parents who are both heterozygous with brown hair will have a blonde baby?
0%
25%
75%
100%
How many alleles does a child receive from each parent for a specific trait?
1
2
3
4
Which of the following is considered "purebred" or "true-breeding?"
heterozygous
homozygous
Which of the following is a "hybrid?"
AA
Aa
aa
A capital letter represents a __________ allele.
dominant
recessive
A lowercase letter represents a _________ allele
dominant
recessive
If red flowers (R) is dominant to white flowers (r), what is the probability that two purebred red flowers (RR) will have an offspring with white flowers?
0%
25%
50%
75%
What do you call an allele that only shows its trait when there are two identical copies?
recessive
hidden
dominant
active
Select all the genotypes that are homozygous.
aa
Ee
Tt
GG
yy
What do you call the passing of genes and traits from generation to generation?
genes
alleles
parents
heredity
What is name of the scientist who researched the passing of traits and is known as the father of modern genetics?
Einstein
Mendel
Madame Curie
Darwin
What is a genotype?
possible combinations of alleles in a gene
physical expression of a gene
whether an allele is dominant or recessive
What is an example of a phenotype?
hair color
Aa
shirt color
Gray fur (G) is dominant to tan fur (g). If a purebred gray rabbit (GG) breeds with a purebred tan rabbit (gg), what will the genotype of 100% of their offspring be?
GG
Gg
gg
Which of following is homozygous dominant?
Aa
AA
aa
If red flowers (R) is dominant to white flowers (r), what is the probability that two purebred red flowers (RR) will have an offspring with red flowers?
0%
25%
50%
100%
When one trait is not completely dominant over another and the two traits blend together, it is called _______________. Example: a red flower and a white flower produce a pink flower
heredity
incomplete dominance
purebred
hybrid
What is the name of the diagram used to predict the genetic outcome of a breeding cross?
Pythagorean Theorem
Punnett Square
Square Root
Graph
