Question

1. What would be the phenotype for each of the following birds, including their gender?

Color

Gender

Bb ZZi:

-

bb ZiZi:

-

BB ZZ:

-

bb ZW:

-

Bb ZiW:

-

2. Using the phenotypes of the parents and of the progeny given in table 1, determine

the genotype of each parent in the first nest.

Male

Female

3. Using the phenotypes of the parents and of the progeny given in table 2, determine

the genotype of each parent in the second nest.

Male

Female

4. Using the phenotypes of the parents and of the progeny given in table 3, determine

the genotype of each parent in the third nest.

Male

Female

5. Using the genotypes form question 2 create a Punnette Square for the cross shown

in the first nest.

6. Using the genotypes form question 3 create a Punnette Square for the cross shown

in the second nest.

7. Using the genotypes form question 4 create a Punnette Square for the cross shown

in the third nest.

8. If a white female and a white male had offspring, why must all the offspring be

white?

9. Explain how an offspring of a blue male and green female, can turn out white.

10. How does the sex-linked gene affect the offspring phenotype results? Explain

your answer.

Bee Questions

11. In bees, the females produce eggs through meiosis. What process do the males

use to produce sperm?

12. Contrast the genetypes of the male and female F1 bees.

13. The cross in Table 4 produces all yellow bees with red eyes for the F1 generation.

What would be the results if the male was wild type and the female was mutant?

14. Fill in the blank Punnett square for the F1 cross to produce the F2 generation.

Female Egg Genotypes

Male

Sperm

Genotypes

No sperm

-

15. In the Punnett Square in question 14, what is the body color and eye color for all the

females?

16. From the Punnett Square in question 13 determine the percent of bees in the F2

generation with the following phenotypes.

Phenotype

Number Calculated

Percent

Yellow with red eyes

Yellow with white eyes

Dark with red eyes

Dark with white eyes

Sum

17. If the males were not hybrid and this was a normal dihybrid cross, what would the

phenotype percent results be?

Phenotype

Percent

Yellow with red eyes

Yellow with white eyes

Dark with red eyes

Dark with white eyes

18. Enter the number of bees of each phenotype in each of the four photos and

calculate the percent of all bees have each phenotype.

Phenotype

Photo 1

#

Photo 2

#

Photo 3

#

Photo 4

#

Sum

Percent

Yellow with red eyes

Yellow with white

eyes

Dark with red eyes

Dark with white eyes

Sum

19. Enter the percent of bees with each phenotype calculated from the Punnett Square

(question 16) with the percent counted from the photos (from question 18).

Phenotype

Percent from

Punnett Square

Percent from

Photos

Yellow with red eyes

Yellow with white eyes

Dark with red eyes

Dark with white eyes

20. Should the percent data developed by these two different methods be similar?

Explain your answer.

Answer 1

1. In this the phenotype

ZZ- Male bird

ZW- Female bird

B- Green eyes (dominant trait)

b- blue eyes (recessive trait)

Color Sex

Bb ZZi: green eyes Male

-

bb ZiZi: blue eyes Male

-

BB ZZ: green eyes Male

-

bb ZW: blue eyes Female

-

Bb ZiW: Green eyes Female