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WorksheetsGenetics Unit Review
Total questions: 15
Worksheet time: 15mins
For snakes, L represents the gene for long offspring and l represents the gene for short offspring. If long (L) is dominant over short (l), which of the following can be said about genotype Ll?
It produces a long snake
It produces a short snake
It produces a medium snake
It produces a snake with bunny ears
In humans, who is responsible for determining the gender of the offspring?
male
female
neither
it is random
An alien family moves in next door. Their youngest boy has blonde hair inside, but when he is in the sunlight, it turns bright blue. This could mean...
The environment must affect the expression of this trait
This cannot be explained. They're ALIENS!
The blue hair gene is from his mom and the blonde hair gene is from his dad
A blonde man and a brunette woman fall in love, get married and have 3 kids. One of their children has blonde hair. What must be the genotype of the mother for one offspring to be blonde?
HH
HB
Hh
hh
Which is NOT a genotype for Type A Blood?
AO
AA
AB
Which Blood Type is recessive
Type A
Type B
Type AB
Type O
A pink bunny and a green bunny reproduce and have green bunnies with pink polka dots. This is known as...
Incomplete Dominance
Codominance
Dominance
Easter Bunny Syndrome
A Homozygous Dominant brown-eyed dog is crossed with a Heterozygous brown-eyed dog in this Punnett Square. What is the probability that each offspring will be blue-eyed?
100%
50%
25%
0%
A female with A blood and a male with B blood have an offspring with type O blood. Which of the following correctly identifies the parents' genotypes?
AO & BO
AA & BB
AO & BB
AA & BO
Which allele combination represents a male who has an X-linked recessive disorder?
XrY
XRY
XrXr
XRXr
In the pedigree that is shown, which represents Irene's allele combination?
XhXh
XHXh
XHXH
XhY
The results of Thomas Hunt Morgan’s last cross are shown in the Punnett square below.
Which of Thomas Hunt Morgan's hypotheses was valid based on these results?
White eyes are lethal in female Drosophila.
White eyes are lethal in male Drosophila.
Female Drosophila with white eyes are homozygous recessive.
White eyes are the dominant trait in female Drosophila.
In a certain species of plant, the allele for tall stems (T) is dominant over the allele for short stems (t). If a plant is heterozygous for stem height, what is its genotype?
TT
Tt
tt
tT
Which of the following best describes the role of DNA in genetics?
DNA is the molecule that carries genetic information in living organisms.
DNA is responsible for the production of proteins only.
DNA is a type of carbohydrate that provides energy to cells.
DNA is a lipid that forms cell membranes.
A scientist crosses two pea plants, one with yellow seeds (YY) and one with green seeds (yy). What will be the phenotype of the offspring?
All yellow seeds
All green seeds
Half yellow and half green seeds
A mix of yellow and green seeds
