Dr. Richard C. Hall, a farmer in North Carolina, is growing hiscropof collard greens. He has a new variety that he callscollard red.He does some crosses of pure breeding blue topure breeding redcollards. The F1 was all green. Whenhe did a self cross of the F1,he got 9 green, 3 blue, and 4red.
1. (M T/F) The genes show dominant epistasis.
2. (MC) If Dr. Richard picked one of the F2 red, he couldbesure:
a. it is homozygous for both genes.
b. it is pure breedingforred.
c. it has the same genotype as theParentalred.
d. all the above
e. a and b
3. (MC) If Dr. Richard took at random a F2 blue plant and crosseditwith a pure breeding green plant, Dr. Richard would get:
a. all blue
b. a mixture of green and blue
c. a mixture of green, blue, and red
d. all green
e. cannot be determined from data given
4. (MC) If Dr. Richard crossed an F2 Blue plant with theparentalred plant, what are the chances he would get all greenplants?
a. 1 in 3
b. 2 in 3
c. all would be green
d. none of the above
e. cannot be determined from data given.
5. Determine the genotypes of the parental and F1 progeny. Dothe F2branch for phenotype groups.
Dr. Richard C. Hall, a farmer in North Carolina, is growing hiscropof collard greens. He has a new variety that he callscollard red.He does some crosses of pure breeding blue topure breeding redcollards. The F1 was all green. Whenhe did a self cross of the F1,he got 9 green, 3 blue, and 4red.
1. (M T/F) The genes show dominant epistasis.
2. (MC) If Dr. Richard picked one of the F2 red, he couldbesure:
a. it is homozygous for both genes.
b. it is pure breedingforred.
c. it has the same genotype as theParentalred.
d. all the above
e. a and b
3. (MC) If Dr. Richard took at random a F2 blue plant and crosseditwith a pure breeding green plant, Dr. Richard would get:
a. all blue
b. a mixture of green and blue
c. a mixture of green, blue, and red
d. all green
e. cannot be determined from data given
4. (MC) If Dr. Richard crossed an F2 Blue plant with theparentalred plant, what are the chances he would get all greenplants?
a. 1 in 3
b. 2 in 3
c. all would be green
d. none of the above
e. cannot be determined from data given.
5. Determine the genotypes of the parental and F1 progeny. Dothe F2branch for phenotype groups.
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| A pet shop is breeding neon tetra fish and find some interesting color phenotypes. 1. The breeder crosses a true-breeding red neon tetra to a true-breeding yellow neon tetra and finds that all F1 progeny are red. Crossing two F1 red neon tetras results in the following numbers of progeny: 36 Red neon tetras, 3 Yellow neon tetras, and 9 Orange neon tetras. How many genes are involved in neon tetra coloration? | |||||||||||||||||||
| a. 1 b. 2 c. 3 d. 4 e. Cannot be determined from the information given
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