Question

you have crossed red flowers to green flowers and seen the following outcome All Brown *assume...

you have crossed red flowers to green flowers and seen the following outcome All Brown *assume that red and green are both recessive and that red is epistatic to green. What is the F1 genotype and the expected F2 outcome

Science   Biology   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

The inheritance pattern is recessive epistasis. The traits are controlled by two genes, each gene with two alleles.

A_B_ = Brown

aaB_ or aabb = red

A_bb = Green

aaBB (red) x AAbb (green)----Parents

aaBB genotype produces only one type of gametes with genotype, aB.

AAbb genotype produces only one type of gametes with genotype, Ab.

So the genotype of F1 hybrid is AaBb with brown phenotype.

F1= Brwon (AaBb)

F1 x F1 = AaBb x AaBb

AB Ab aB ab
AB AABB (brown) AABb (brown) AaBB (brown) AaBb (brown)
Ab AABb (brown) AAbb (green) AaBb (brown) Aabb (green)
aB AaBB (brown) AaBb (brown) aaBB (red) aaBb (red)
ab AaBb (brown) Aabb (green) aaBb (red) aabb (red)

F2 phenotypic ratio = Brown : Green : Red = 9:3:4

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
In peas yellow is dominant and green is recessive. You have crossed green peas to yellow...
In peas yellow is dominant and green is recessive. You have crossed green peas to yellow peas and obtained all yellow peas. Indicate the genotype of each parent and the genotype of the F1 progeny. You self-cross the F1 and get 115 individuals 32 green. Give the expected outcome for this cross and perform Chi Squared analysis to determine if this is likely a Mendelian trait (be sure to give expected and observed, show your calculations, and indicate your degrees...
Mendel crossed a pure breeding tall pea plant having red flowers with a pure breeding short...
Mendel crossed a pure breeding tall pea plant having red flowers with a pure breeding short pea plant having white flowers. All the F1 plants were tall with red flowers. He then selfed the F1 plants and the F2 plants had new combination of traits. Using a punnet square, show the phenotypes and genotypes of the F2 plants.
An F2 flowerbed has a total of 929 plants. You observed/counted 705 red flowers and 224...
An F2 flowerbed has a total of 929 plants. You observed/counted 705 red flowers and 224 purple (in these flowers, red flower color is dominant to purple). Based on your knowledge of Mendelian genetics, what would be the genotype for both of the F1 parents that were crossed to produce these F2 plants (write a tentative hypothesis)? Test your hypothesis using chi square analysis and probability values. Remember, because only two traits are examined in this problem, the degrees of...
In an ornamental plant, silver-colored flowers (s) are recessive to blue-colored flowers (S), red leaves (r)...
In an ornamental plant, silver-colored flowers (s) are recessive to blue-colored flowers (S), red leaves (r) are recessive to green leaves (R), and long stems (l) are recessive to short stems (L). All three genes involved are located on the same chromosome. Two true-breeding strains were crossed to produce an F1 plant. Then, this F1 plant was test-crossed to a plant with silver flowers, red leaves, and long stems, to produce the following progeny: progeny phenotype count of progeny silver...
The seeds from Mendel’s tall plants were round and yellow, all three characters due to a...
The seeds from Mendel’s tall plants were round and yellow, all three characters due to a dominant gene at each of three independently assorting loci. The recessive genotypes dd, ww, and gg produce dwarf plants with wrinkled and green seeds, respectively., (a) If a pure, tall wrinkled and yellow variety is crossed with a pure dwarf, round, green variety, what phenotypic ratio is expected in the F1 and F2? (b) What percentage of the F2 is expected to be of...
Purple flowers versus red flowers and long pollen versus round pollen are two traits in a...
Purple flowers versus red flowers and long pollen versus round pollen are two traits in a sweet pea plant. When a true breeding purple/long pollen plant is crossed with a true-breeding red/round pollen plant, the F1 generation offspring all have purple flowers and long pollen. When the F1 generation is bred to itself via human-directed fertilization, a ratio of 7 : 4.9 : 4.9 : 0.05, purple/long : red/long : purple/round : red/round is noted in the F2 generation. What...
In corn, the trait for yellow seedlings (g) is recessive to green seedlings (G), and waxy...
In corn, the trait for yellow seedlings (g) is recessive to green seedlings (G), and waxy endosperm (w) is recessive to starchy endosperm (W). The two genes assort independently. A cross between a homozygous green, waxy plant and a homozygous yellow starchy plant produced F1 progeny that were all phenotypically green, starchy. a) If F1 individuals are interbred (self-pollinated), what phenotypes and in what proportions (ratios) would you expect in the F2 generation progeny b) List the expected F2 genotypes...
Please answer all the questions, they're related The autosomal recessive allele bw, for brown eyes in...
Please answer all the questions, they're related The autosomal recessive allele bw, for brown eyes in Drosophila interacts with the X-linked recessive allele, v, for vermilion eyes, since flies that are recessive for both genes have white eyes. Wild type flies have red eyes. What eye color phenotypes, in what proportions, would be expected in the progeny from a cross of a white-eyed female and a brown eyed male?  Choose the best answer. Select one: a. all females with brown eyes,...
Fill-ins. Type the one BEST word or short phrase into the answer box. In rats, the...
Fill-ins. Type the one BEST word or short phrase into the answer box. In rats, the pigment gene has two alleles: the P allele is dominant and confers no pigment in the hair (no color); the p allele is recessive and confers hair pigment (color). A second gene, black, also has two alleles: the B allele is dominant and confers black hair pigment and the b allele is recessive and confers tan hair pigment. The dominant P allele is epistatic...
1.In a certain plant, flowers can be either white, red or blue. The following crosses were...
1.In a certain plant, flowers can be either white, red or blue. The following crosses were performed with different flower colour varieties: Cross 1: P: red x red F1: all red F2: all red Cross 2: P:blue x red F1:148 blue, 149 red, 103 white Cross 3: P: blue x white F1: all blue F2: 221 blue, 79 red, 100 white a.Based on the crosses, how many genes control flower colour? Include a chi-square test to support your answer for...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT