7) In some populations of grasses, the ability to grow in soil sprayed with a certain herbicide is a dominant trait determined by the allele "R". A) In a population at genetic equilibrium, 91% of the seeds can germinate in sprayed soil. What are the frequencies of "R" and "r"? B) What percentage of the plant that germinates in the soil will be heterozygotes?

7) In some populations of grasses, the ability to grow in soil sprayed with a certain herbicide is a dominant trait determined by the allele "R". A) In a population at genetic equilibrium, 91% of the seeds can germinate in sprayed soil. What are the frequencies of "R" and "r"? B) What percentage of the plant that germinates in the soil will be heterozygotes?

Name: 7) In some populations of grasses, the ability to grow in soil spraye
Uploaded: 2024-03-20T06:42:55.000Z
Channel: Bartleby
Description: 7) In some populations of grasses, the ability to grow in soil sprayed witha certain herbicide is a dominant trait determined by the allele "R".A) In a population at genetic equilibrium, 91% of the seeds can germinate insprayed soil. What are the fr

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter12: Mendel, Genes, And Inheritance

Section: Chapter Questions

Problem 1ITD

See similar textbooks

Similar questions

1. What would be the probability of an allele going to fixation after one generation of drift in a finite diploid population of size N? 2. What would the probability of an allele being purged from a population after one generation of drift in a finite diploid population of size N?
(a) Assuming that Migaloo’s albinism is caused by a rare recessive gene, what would be the likelihood of the establishment of a natural robust subpopulation of albino white humpback whales in this population? (b) Assuming that Migaloo’s albinism is caused by a rare dominant gene, what would be the likelihood of the establishment of a natural robust subpopulation of albino white humpback whales in this population?
Based on this information (picture) A. What is the probability that a randomly sampled individual from the population has two copies of the a allele (that is, that it has an aa genotype)? B. What is the probability that both members of a randomly sampled married couple (man and woman) are aa at the asparagus-smelling gene? C. What is the probability that both members of a randomly sampled married couple (man and woman) are heterozygotes at this locus (meaning that each person has one allele A and one allele a)? D. Consider the type of couple described in (c). What is the probability that the first child of such a couple also has one A allele and one a allele (is a heterozygote)? Remember that the child must receive exactly one allele from each parent.
Of the three outcomes of hybridization (fusion, stability, and reinforcement), which of them will result in the continued generation of interspecies hybrids? Explain.
1) Two true-breeding varieties of maize, one 11 cm high and the other 47 cm high were crossed and the resultant F1 hybrids were then crossed to generate the F2 . In the F2 there were a total of 13,923 plants with a continuous variation in heights between the two extremes and with only 3 plants as large as 47 cm high and 5 plants of 11 cm high.a) How many i) genes and ii) how many alleles are involved in determining height in this plant? b) What is the contribution of each dominant allele to the phenotype in cm? c) What would be the size and genotype of the F1 from a cross between a true-breeding 11 cm plant and a true-breeding 47 cm plant? d) The F1 from (b) is then crossed to give an F2. What proportion would you expect in the F2 of each extreme phenotype? e) In a cross between a 29cm plant and a 20cm plant what would be the genotypes giving the smallest number of different phenotypes? specify the phenotypes observed.
1) Two true-breeding varieties of maize, one 11 cm high and the other 47 cm high were crossed and the resultant F1 hybrids were then crossed to generate the F2 . In the F2 there were a total of 13,923 plants with a continuous variation in heights between the two extremes and with only 3 plants as large as 47 cm high and 5 plants of 11 cm high. a) What would be the size and genotype of the F1 from a cross between a true-breeding 11 cm plant and a true-breeding 47 cm plant? b) The F1 from (b) is then crossed to give an F2. What proportion would you expect in the F2 of each extreme phenotype? c) In a cross between a 29cm plant and a 20cm plant what would be the genotypes giving the smallest number of different phenotypes? specify the phenotypes observed.
Note that your Punnett Squares predictions assumed the law of independent assortment was true for these characteristics . How do the percentages of purple smooth , purple wrinkled , yellow smooth , and yellow wrinkled kernels on the cob ( # 9 ) compare to those predicted in # 8 ? Given these results , do the alleles for corn kernel color and shape segregate independently or are they linked ?
What is the relative fitness of the F1 hybrids relative to both parental populations according to this model?
20. 20.Which among the following statements is INCORRECT? A. Codominance is evident when a cross between organisms with two different phenotypes produces offspring that exhibits both parental traits because the alleles for each trait are neither completely dominant nor recessive B. Incomplete dominance is evident when a cross between a white carnation and a red carnation results in a pink carnation flower. C. Law of dominance state that if the alleles of a specific gene differ from each other, only one phenotype will be expressed while the other is masked D. The inheritance of one trait does not affect the inheritance of the other trait especially if the allele of the other trait is located in a different chromosome
1. Suppose you are studying a trait due to three genes that all additively affect the same trait. The genes are A, B, and C. Capital letters symbolize the "phenotype-adding" allele and lower case letters symbolize the "non-adding" allele. (In other words, the behavior of the genes is like those affecting wheat kernel color in the Nilsson-Ehle experiment presented in class). If AaBbCc is testcrossed to aabbcc, how many different phenotypes will be produced in the progeny?
You are studying a population of penguins in Antarctica. Your DNA analysis of this population reveals that for the feather color pattern gene, 35 individuals are homozygous dominant, 35 individuals are heterozygous, and 30 individuals are homozygous recessive. After observing this population for several years, you repeat your DNA study and find that the current generation of penguins has 15 individuals that are homozygous dominant, 10 individuals that are heterozygous, and 75 individuals that are homozygous recessive. Which of the following hypotheses for this data would be supported by this data based on your understanding of Hardy-Weinberg equilibrium? This population of penguins is maintaining Hardy-Weinberg equilibrium due to its large population size. The penguins are randomly choosing mates, which has led to Hardy-Weinberg equilibrium. The penguins are very isolated, which is preventing gene flow from affecting Hardy-Weinberg equilibrium. The recessive phenotype in…
1. If two raccoons with medium-sized tail bands and have the habit of washing some of their foods will be crossed, what is the probability of having F1 raccoons with: c.1 wide tail bands that won’t wash any of their food? c.2 the same genotype as the parent raccoons? 2. If a raccoon with a wide tail band that washes only some of its food is crossed with a raccoon with a narrow tail band that doesn’t wash any food, what percentage of their offspring would be medium-tailed and washes all its food? Show COMPLETE cross.