Question

In: Biology

4. Continuing the example above of mating two plants, a homozygous recessive for pollen gran and...

4. Continuing the example above of mating two plants, a homozygous recessive for pollen gran and flower color and the other heterozygous for both traits. A) What are the genotype and phenotype ratios you expect for the offspring? B) Which Mendelian assumption are you making when estimating those allele ratios?

Solutions

Expert Solution

Genotypes: [let P represents pollen grain gene and F represents that for flower]

  • Homozygous plant genotype: ppff , Gametes can be pf and pf
  • Heterozygous plant genotype: PpFf, Gametes can be Pf, PF, pF and pf
  • Crossing can be shown as the figure above.

A) What are the genotype and phenotype ratios you expect for the offspring?

  • Ratio of genotype can be given as PpFf : Ppff : ppFf : ppff :: 1:1:1:1
  • Ratio of genotype can be given as:

Dominant flower trait with dominant pollen grain trait: dominant flower trait with recessive pollen trait: recessive flower trait with dominant pllen trait: recessive flower trait with recessive pollen trait :: 1:1:1:1

B) Which Mendelian assumption are you making when estimating those allele ratios?

Mendel's law of independent assortment: explains the assorting of individual traits without respect to others in formation of gametes and then offsprings and thus accounts for those allele ratios.

PLEASE DO NOT HESITATE TO GIVE THUMBS UP. HAPPY LEARNING. ALL THE BEST. STAY SAFE.

gladiator answered 1 year ago
Next > < Previous

Related Solutions

In a specific population of plants the occurrence of homozygous recessive (aa) individuals is determined to...
In a specific population of plants the occurrence of homozygous recessive (aa) individuals is determined to be 9%. Assume the population is in Hardy-Weinberg Equilibrium. What is the frequency of the dominant (A) allele in the population? 0.9 0.7 0.3 0.09 What is the frequency of the recessive (a) allele in the population? 0.9 0.7 0.3 0.09 What is the frequency of the homozygous dominant individuals in the population? 0.810 0.490 0.900 0.081 What is the frequency of the heterozygotes...
A Drosophila female homozygous mutant for two recessive genes (a and b) is crossed to a...
A Drosophila female homozygous mutant for two recessive genes (a and b) is crossed to a wild-type male. The F1 are all wild-type. An F1 female is crossed to a double-mutant male and the following phenotypes were seen in the F2: a b 497 + + 460 a + 465 + b 426 Total 1848 Perform a “best fit” or apriori χ2 analysis to determine if genes a and b assort independently. Give the value for χ2, DF and Probability;...
Use this information to answer Questions 1 - 4 below. You cross two homozygous pea plants....
Use this information to answer Questions 1 - 4 below. You cross two homozygous pea plants. One parent has round peas, terminal flowers, violet petals, and constricted pods, while the other parent expresses the alternate phenotypes of wrinkled peas, axial flowers, white petals, and full pods. The four traits are controlled by four different genes, each on a separate chromosome.In the F1, all plants have round peas, axial flowers, violet petals, and full pods. In the F2, all possible combinations...
1- When crossing two organisms for a single trait - one that is homozygous recessive with...
1- When crossing two organisms for a single trait - one that is homozygous recessive with one that is homozygous dominant - what is the chance of producing an offspring with the homozygous recessive phenotype? Group of answer choices )% 75% 25% 100% 2- Incomplete dominance is when? Group of answer choices Homozygotes show an intermediate phenotype There is no homozygous genotype Heterozygotes show an intermediate phenotype Heterozygotes share dominance 3- When antibodies in the plasma attach to antigens on...
Two pea plants are crossed. One is homozygous for white flowers and the other is heterozygous...
Two pea plants are crossed. One is homozygous for white flowers and the other is heterozygous for purple flowers. Both are heterozygous for being tall plants. In pea plants, tall is dominant to short, and purple flowers are dominant to white. Fill out the table below for the probability of each possible phenotype. Report probability as a decimal rounded to four places (e.g. 0.1250, not 1/8 or 12.5%). Phenotype Probability tall purple __________ short purple __________ tall white __________ short...
Two pea plants are crossed. One is homozygous for white flowers and the other is heterozygous...
Two pea plants are crossed. One is homozygous for white flowers and the other is heterozygous for purple flowers. Both are heterozygous for being tall plants. In pea plants, tall is dominant to short, and purple flowers are dominant to white. Fill out the table below for the probability of each possible phenotype. Report probability as a decimal rounded to four places (e.g. 0.1250, not 1/8 or 12.5%). Phenotype Probability tall purple short purple tall white short white In a...
Two pea plants are crossed. Both are heterozygous for purple blossom color, while one is homozygous...
Two pea plants are crossed. Both are heterozygous for purple blossom color, while one is homozygous for being short and the other is heterozygous for being tall. In pea plants, tall is dominant to short, and purple flowers are dominant to white. Fill out the table below for the probability of each possible phenotype. Report probability as a decimal rounded to four places (e.g. 0.1250, not 1/8 or 12.5%). Phenotype Probability tall purple short purple tall white short white In...
Two pea plants are crossed. Both are heterozygous for purple blossom color, while one is homozygous...
Two pea plants are crossed. Both are heterozygous for purple blossom color, while one is homozygous for being short and the other is heterozygous for being tall. In pea plants, tall is dominant to short, and purple flowers are dominant to white. Fill out the table below for the probability of each possible phenotype. Report probability as a decimal rounded to four places (e.g. 0.1250, not 1/8 or 12.5%). Phenotype Probability tall purple short purple tall white short white In...
Wild harebells have blue flowers. Two strains of harebells carry recessive alleles that give the plants...
Wild harebells have blue flowers. Two strains of harebells carry recessive alleles that give the plants white flowers. a. Describe a cross to determine whether the white-flower causing alleles in these two strains are variants of the same gene or different genes, and the progeny phenotypes you expect to find in each case. b. You results from the cross above indicate that the two strains carry alleles at different genes. What phenotypic ratio do you expect to find among the...
In Cpp A rational number is a quotient of two integers.For example, 12/5,12/-4,-3/4, and 4/6 are...
In Cpp A rational number is a quotient of two integers.For example, 12/5,12/-4,-3/4, and 4/6 are all rational numbers .A rational number is said to be in reduced form if its denominator is positive and its numerator and denominator have no common divisor other than 1 For example,the reduced forms of the rational numbers given above are 12/5, -3/1, -3/4 and 2/3. Write a class called Rational with a constructor Rational ( int, int) that takes two integers, a numerator...
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT