WorksheetsGenetics Review Practice Quiz!
Total questions: 25
Worksheet time: 19mins
The genotype for a yellow plant is...
Which of the following alleles is homozygous recessive?
Tt
tt
TT
t
How many alleles (letters) does each person carry for a trait?
1
2
3
4
w= non-white hair
If you cross a horse with WW and a horse with ww what fraction of the offspring would be expected to have white hair?
Two identical alleles for a trait is known as
homozygous
heterozygous
mutation
codominance
A mutation is harmful to an organism if it
changes the phenotype of an organism
changes the DNA segment
reduces the organism's chance of survival
makes the organism better able to avoid predators
What does Pp mean?
two dominant alleles
heterozygous alleles
one dominant allele
two dominant and recessive alleles
Who studied different characteristics of pea plants by cross-pollinating plants?
Gregor Mendel
Albert Punnett
Sir Isaac Newton
David Kuster
What is the probability of producing a tall pea plant from a cross between two hybrid tall pea plants?
25%
50%
75%
100%
What does a Punnett Square determine?
all of Mendel's discoveries about genetic crosses
all the outcomes of a genetic cross
only the recessive allele combinations
only the dominant allele combinations
Genotype is
stem height
feather color
physical appearance
genetic makeup
The term that relates to physical characteristics that are studied in genetics.
traits
offspring
generations
hybrids
Factors that control traits are
purebreds
genes
recessives
parents
A mutation is
any change that is harmful
any change in a gene or chromosome
any change that is helpful
any change in the phenotype
If a homozygous black cat (BB) is crossed with a homozygous white cat (bb), what is the probability of having a cat with white fur?
100%
0%
75%
25%
