You are given 2 pure breeding stocks of a certain plant. One has white flowers, and...

You are given 2 pure breeding stocks of a certain plant. One has white flowers, and the other has purple flowers.

1. when these two are bred together, all of the resulting plants have purple flowers. Explain this result in terms of dominance. Choose symbols (letters) to represent the alleles of the gene involved, and use them to show the genotype of each parent and of the hybrid offspring.

2. what result (ratio of phenotypes) do you expect to see if you allow the offspring produced in #1 to self -hybridize? Draw a punnett square to explain why these resuts are obtained.

Expert Solution

(1)When the two pure breeding stocks are bred together, all of the resulting plants have purple flowers in F1 generation. Let white flowers are recessive (ww) and purple flowers are doninent (PP), if the F1 progeny (wP) is purple means the dominent one shows its character and supresses the recessive one.

(2) The ratio of phenotypes is 3:1 in F2 generation if allow the offspring produced in F1 to self -hybridize.

F1 generation wP(Tall) wP (Tall)

Gametes w or P w or P

Male gametes

Female gametes	w	P
w	ww (White flowered)	wP (Purple flowered)
P	wP (Purple flowered)	PP (Purple flowered)

In the F2 generation one white flowered plants have both recessive alleles (ww) which are responsible white flower colour while in other three purple flowered plants have one dominent allele (P) (which is responsible for purple flower colour) with one recessive allele which are responsible white flower colour. The purple flowered plants of the F2 generation have purple flowers because of the dominent allele (P) which shows its character thats why these resuts are obtained. .

gladiator answered 1 year ago

A true-breeding plant with red flowers was crossed with a true-breeding plant with white flowers. The...

A true-breeding plant with red flowers was crossed with a true-breeding plant with white flowers. The F1 progeny all had a new flower color, pink. The F1 plants were inter-crossed, and produced 44 red, 135 pink, and 61 white flower plants. (4 pts.) What is the most likely mode of inheritance being exhibited in these phenotypes. State your hypothesis and provide your reasoning, which can also include why other modes of inheritance are unlikely (process of elimination). Do not assign...

A pure breeding tall plant with smooth seeds was crossed with a pure breeding short plant...

A pure breeding tall plant with smooth seeds was crossed with a pure breeding short plant with wrinkled seeds. All the F1 plants were tall with smooth seeds. Two of these F1 plants were crossed and four different phenotypes were obtained in the 320 plants produced. How many tall plants with wrinkled seeds should you expect to find.

You set up a dihybrid cross between true-breeding tall pea plant with white flowers and a...

You set up a dihybrid cross between true-breeding tall pea plant with white flowers and a true-breeding short pea plant with purple flowers. Your F1 generation looks uniformly tall with purple flowers. The results of the F2 generation counts are shown in the table below: Phenotype Number of progeny Tall/purple flowers 850 Short/purple flowers 350 Short/white flowers 87 Tall/white flowers 313 Your calculated Chi square test statistic for this analysis is: a. 8.31 b. 3.37 c. 4.19 d. 16.3 e....

One species of plant produces blue, light blue, and white flowers. To determine the inheritance pattern,...

One species of plant produces blue, light blue, and white flowers. To determine the inheritance pattern, the following matings were performed: blue x blue to blue white x white to white blue x white to light blue This example represents a pattern: (choose the best option) a. Associated with the X chromosome b.Incomplete Dominance c. Codominance d.Mendelian

you have two pure-bred varieties of roses, one that has multiple flowers on each stem and...

you have two pure-bred varieties of roses, one that has multiple flowers on each stem and red petals, and another that has one flower per stem and yellow petals. you are sure you could get rich if you could just get a multiple-flowered, yellowfins petalled rose bush. you cross your two pure breeding varieties and all the F1 progeny plants have identical phenotype, but your lab assistant forgets to write down the phenotype and then loses the plants. fortunately, you...

A wild legume with white flowers and long pods is crossed to one with purple flowers...

A wild legume with white flowers and long pods is crossed to one with purple flowers and short pods. The F1 offspring are allowed to self-fertilize, and the F2 generation has 301 long purple, 99 short purple, 612 long pink, 195 short pink, 295 long white and 98 short white plants. How are these traits being inherited? Inheritance of these traits can best be explained by one gene with 3 different alleles. Inheritance of these traits can best be explained...

1. You cross a true-breeding parental with yellow flowers and oval petals with a true-breeding parental...

1. You cross a true-breeding parental with yellow flowers and oval petals with a true-breeding parental with purple flowers and round petals. The F1 offspring have purple flowers and oval petals. a. Give the genotypes for the parentals and F1s (you can choose your own letters for the alleles): yellow flower oval petal parental: _____ purple flower round petal parental: _____ purple flower oval petal F1: _______ b. You perform a cross of the F1s, to produce the F2 generation....

it is found that the probability a certain plant flowers in its first year is 40%....

it is found that the probability a certain plant flowers in its first year is 40%. A gardener purchases 1000 of these first-year plants. What is the variance and standard deviation of the random variable X which is the number of plants that flower in the first year?

Which of the following is an example of codominance? flowers of a certain plant can come...

Which of the following is an example of codominance? flowers of a certain plant can come in purple, blue, or yellow a Scorpio’s venom is more potent when it’s younger in roan cattle, you can see a mix or both red and white furs there are many possible mutations that lead to white eyes in flies there are many possible mutations that lead to white eyes in flies a certain plant can have jagged, rough, or smooth edges on its...

4) A vanilla bean plant with white-coloured flowers was self-crossed. The seeds were collected and planted....

4) A vanilla bean plant with white-coloured flowers was self-crossed. The seeds were collected and planted. The resulting progeny were 211 plants with white-coloured flowers and 55 plants with black-coloured flowers. Write the genotypes of the parental plant and its progeny, using B and b to designate the different flower-colour alleles. (a) Genotype of the parent with white-coloured flowers: (b) Genotype(s) of the progeny with white-coloured flowers (if more than one genotype is possible, please separate the genotypes with...

Question