WorksheetsGenetics Pre-Assessment
Total questions: 20
Worksheet time: 40mins
Which of the following genotypes would code for a dominant phenotype? Select all that apply.
AA
Aa
aa
Which of the following best describes the genotype "Rr"?
recessive
heterozygous
purebred
all of the above
Which of the following genotypes are homozygous? Select all that apply.
Aa
BB
dd
If tall plants are dominant and short plants are recessive, how would you write the genotype for a homozygous tall plant?
BB
Bb
bb
If black fur is dominant and white fur is recessive, what genotype would an organism with white fur have?
FF
Ff
ff
Which of these Punnett squares represents a cross between a homozygous dominant parent and a heterozygous parent?
In pea plants, being tall is dominant and being short is recessive. Two tall plants mate. One has the genotype Tt and the other has the genotype TT. What is the chance that they will have a tall offspring?
0%
25%
50%
75%
100%
If both parents have the genotype Aa, what is the chance their offspring will also have the genotype Aa?
0%
25%
50%
75%
100%
In humans, being able to curl your tongue is a dominant trait and NOT being able to curl you tongue is a recessive trait. If a mom with the genotype Rr has a child with a dad with the genotype Rr, what is the probability that their child will be able to curl its tongue?
0%
25%
50%
75%
100%
Cody crosses a plant producing wrinkled peas with a plant producing smooth peas. Weeks later, he discovers that all the offspring plants have smooth peas. Cody drew the Punnett square above to show the genotypes of the offspring plants. What were the genotypes of the parent plants?
RR and rr
Rr and Rr
RR and Rr
Rr and rr
A cross between a red flower and a white flower produces red and white spotted flowers. Which type of inheritance pattern is indicated by these results?
A. polygenic
B. codominance
C. multiple alleles
D. incomplete dominance
complete dominance
Incomplete dominance means that their traits are...
When one allele is not dominant over another, resulting in a blended phenotype for heterozygous offspring is considered....
Incomplete Dominance
Codominance
Polygenic
What are the gametes for BbDd?
What goes in box 1?
Cross two homozygous plants
(RRYY x rryy) R = round seeds, r = wrinkled seeds Y = yellow seeds, y = green seeds
What percent will have round and yellow seeds?
75%
100%
Based off this punnett square, what fraction of the offspring will have wrinkled, yellow seeds?
R = round seeds, r = wrinkled seeds Y = yellow seeds, y = green seeds
9/16
3/16
1/16
16/16
