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WorksheetsGenetics Review
Total questions: 51
Worksheet time: 41mins
Look at the Punnett Square. What's the probability of having offspring displaying the recessive phenotype?
100%
75%
50%
25%
A type of gene that can be hidden is by the dominant gene
genotype
recessive
dominant
allele
What is the missing genotype?
BB
Bb
bb
What percentage of the offspring will have brown eyes?
25%
50%
75%
100%
What is the phenotype in the top right square? (Yellow is dominant and green is recessive)
yy
Yy
yellow
green
What are traits that aren't dominant over each other but whose heterozygous outcome is a combination of the two phenotypes?
pure dominance
incomplete dominance
co-dominance
simple dominance
The study of heredity
genetics
heredity
chemistry
botany
What is the passing of traits from parent to offspring?
heredity
genetics
evolution
ecology
If red and white have co-dominance for a trait, and a red flower is crossed with a white flower, what will be the heterozygous phenotype?
a red & white spotted flower
a pink flower
Which of the following genotypes would lead to a recessive phenotype?
EE
Ee
ee
Which type of reproduction has one parent, and genetically identical offspring?
Asexual reproduction
Sexual reproduction
If an organism has 15 chromosomes in its sex cells, how many chromosomes does it have?
15
30
10
45
If a yellow pea plant is dominant to green, what percent of the offspring would be green if a hybrid yellow plant is crossed with a green plant?
25%
50%
75%
100%
If purple flowers are dominant to white flowers, what cross would produce 25% white flowers?
PP x pp
PP X Pp
Pp x pp
Pp x Pp
If wrinkled seeds is recessive to round seeds, what genotype would need to be crossed with a heterozygous round seed to produce the most wrinkled seeds?
RR
Rr
rr
If blindness is recessive in cats, what percent of offspring will be blind if a blind female cat has kittens with a purebred seeing male cat?
0%
25%
50%
75%
Monster B and Monster G are both hybrid for red eyes (which is dominant to yellow eyes). What percentage of their offspring will have yellow eyes?
0%
25%
50%
75%
If a 50% chance of having long eyelashes is desired and long eyelashes is recessive to short eyelashes, what would you need to cross with a hybrid short-eyelashed mouse?
ss
SS
Ss
DNA is a ________________ found in the ________________.
double helix, cytoplasm
single helix, nucleus
double helix, nucleus
single helix, cytoplasm
