Monday Dec. 10 Page 273 Answer question # 1. Gametes Sex Cells X X XX Xy Body Cells Baby Girl.

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Presentation transcript:

Monday Dec. 10 Page 273 Answer question # 1

Gametes Sex Cells X X XX Xy Body Cells Baby Girl

Gametes Sex Cells D d D d DD dd Body Cells Offspring

Gametes Sex Cells D d D d DD dd Body Cells Offspring

Goal # Two Trait Cross Number your paper 1, 2, 3 Write an answer for the following questions

1. Write the phenotype for the pea on the left and the phenotype for the pea on the right. Round Green Wrinkled Yellow

2. Write the genotype for the pea on the left and the genotype for the pea on the right. Round GreenWrinkled Yellow RRyy Rryy rrYY rrYy

3. Write the genotype for a heterozygous round and heterozygous yellow pea.

Write the genotype for a heterozygous round and heterozygous yellow pea. Rr

Write the genotype for a heterozygous round and heterozygous yellow pea. RrYy

Segregate the alleles to form gametes RrYyRrYy Can not have two of the same letters in the same gamete

Segregate the alleles to form gametes rrYYrrYY

RryyRryy

What will the offspring look like in a cross between RrYy RrYyRrYy x

Dihybrid cross think sheet

Dihybrid cross Two traits are crossed at one time. RrYy X RrYy

Make a Punnett Square

RYryrYRy RY Ry rY ry 7

RYryrYRy RY Ry rY ry

Match the Genotypes With The Phenotypes Round and Yellow are dominant 1.Round & Yellow 2.Round & Green 3.Wrinkled & Yellow 4.Wrinkled & Green RRYY rrYY rryy RRyy RrYy Rryy rrYy

Write the Gametes for the following 1. Bb 2. BbFf

Two Trait Cross :Rabbits 1. What are the phenotypes (descriptions) of rabbits that have the following genotypes? Ggbb ________________________ ggBB _________________________ GgBb ________________________ ggbb _________________________

1. What are the phenotypes (descriptions) of rabbits that have the following genotypes? Ggbb ________________________ ggBB _________________________ GgBb ________________________ ggbb _________________________

Question 2 A male rabbit has the genotype GgBb. What are the four different combinations of gametes that this rabbit is able to produce?

Question 3 A female rabbit has the genotype GgBb. What are the different combinations of gametes that this rabbit is able to produce?

Make a Punnett Square

Question 4 Complete the Punnett square and Answer questions 1 – 4

Phenotypes of Offspring 1. How many have gray fur and black eye? 2. How many have gray fur and red eyes? 3. How many have white fur and black eyes? 4. How many have white fur and red eyes?

Take Out a Sheet of Paper Write Genetic Test Review across the top. Write Genetic Terms Number your paper 1 – 8 Skipping lines as you go. Write Phenotypes Number your paper 9 – 15. Write Genotypes Number your paper 16 – 24.

Question 5 A male rabbit with the genotype GgBb is crossed with a female rabbit with the genotype GgBb. List the gametes for both the male and the female. Determine the possible phenotypes of the offspring. Male Gametes Female Gametes

Phenotypes of Offspring 1. How many have gray fur and black eyes? 2. How many have gray fur and red eyes? 3. How many have white fur and black eyes? 4. How many have white fur and red eyes?