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20) If Werner and Gertrud have 32 offspring, how many can they expect to have of each genotype? - BBCc: 4 - BbCc: 8 - BBcc: 4 - Bbcc: 8 - bbCc: 4 - bbcc: 4 21) How many can they expect to have of each phenotype? Remember that multiple genotypes can produce the same phenotype. Tall, red = 12 Tall, white = 12 Short, red = 4 Short, white = 4 22) Werner and Gertrud do produce 32 offspring. They have 12 tall, red-eyed offspring, 13 tall, white-eyed offspring, 3 short, red-eyed offspring, and 4 short, white-eyed offspring. Does this match up with your expectations? Why or why not? The expected and observed number of each phenotype is more or less the same. This is because of the independent assortment of two genes. The two genes are not linked 23) What if instead, they had 25 tall, red-eyed offspring, 1 tall, white-eyed offspring, 3 short, red-eyed offspring, and 3 short, white-eyed offspring? 24) Let's consider one more, a classic "dihybrid cross", or a cross between two organisms that are heterozygotes for two genes. This time, Werner is DdEe, and so is Gertrud. The D gene is for curly fur (DD and Dd have curly fur, dd have straight fur), and E is for claw length (EE and Ee have short claws, ee have long claws). What are the possible genotypes of Werner and Gertrud's offspring? What are the possible phenotypes? Calculate the probability of each genotype and phenotype using whatever method you like.

          20) If Werner and Gertrud have 32 offspring, how many can they expect to have of each genotype?

- BBCc: 4
- BbCc: 8
- BBcc: 4
- Bbcc: 8
- bbCc: 4
- bbcc: 4

21) How many can they expect to have of each phenotype? Remember that multiple genotypes can produce the same phenotype.

Tall, red = 12
Tall, white = 12
Short, red = 4
Short, white = 4

22) Werner and Gertrud do produce 32 offspring. They have 12 tall, red-eyed offspring, 13 tall, white-eyed offspring, 3 short, red-eyed offspring, and 4 short, white-eyed offspring. Does this match up with your expectations? Why or why not?

The expected and observed number of each phenotype is more or less the same. This is because of the independent assortment of two genes. The two genes are not linked

23) What if instead, they had 25 tall, red-eyed offspring, 1 tall, white-eyed offspring, 3 short, red-eyed offspring, and 3 short, white-eyed offspring?

24) Let's consider one more, a classic "dihybrid cross", or a cross between two organisms that are heterozygotes for two genes. This time, Werner is DdEe, and so is Gertrud. The D gene is for curly fur (DD and Dd have curly fur, dd have straight fur), and E is for claw length (EE and Ee have short claws, ee have long claws).

What are the possible genotypes of Werner and Gertrud's offspring? What are the possible phenotypes? Calculate the probability of each genotype and phenotype using whatever method you like.

20) If Werner and Gertrud have 32 offspring, how many can they expect to have of each genotype?

- BBCc: 4
- BbCc: 8
- BBcc: 4
- Bbcc: 8
- bbCc: 4
- bbcc: 4

21) How many can they expect to have of each phenotype? Remember that multiple genotypes can produce the same phenotype.

Tall, red = 12
Tall, white = 12
Short, red = 4
Short, white = 4

22) Werner and Gertrud do produce 32 offspring. They have 12 tall, red-eyed offspring, 13 tall, white-eyed offspring, 3 short, red-eyed offspring, and 4 short, white-eyed offspring. Does this match up with your expectations? Why or why not?

The expected and observed number of each phenotype is more or less the same. This is because of the independent assortment of two genes. The two genes are not linked

23) What if instead, they had 25 tall, red-eyed offspring, 1 tall, white-eyed offspring, 3 short, red-eyed offspring, and 3 short, white-eyed offspring?

24) Let's consider one more, a classic "dihybrid cross", or a cross between two organisms that are heterozygotes for two genes. This time, Werner is DdEe, and so is Gertrud. The D gene is for curly fur (DD and Dd have curly fur, dd have straight fur), and E is for claw length (EE and Ee have short claws, ee have long claws).

What are the possible genotypes of Werner and Gertrud's offspring? What are the possible phenotypes? Calculate the probability of each genotype and phenotype using whatever method you like.

Added by Tina P.

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