How are you able to determine the genotype of a parent if you only know the phenotype of both parents and the offspring? Give an example. 4) What is the purpose of crossing a true breeding dominant organism with an organism expressing a dominant phenotype? What will you learn?

How are you able to determine the genotype of a parent if you only know the phenotype of both parents and the offspring? Give an example. 4) What is the purpose of crossing a true breeding dominant organism with an organism expressing a dominant phenotype? What will you learn?

Name: 3) How are you able to determine the genotype of a parent if you only
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Description: 3) How are you able to determine the genotype of a parent if you only know the phenotype of both parents and the offspring? Give an example. 4) What is the purpose of crossing a true breeding dominant organism with an organism expressing a dominant p

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

Section12.1: The Beginnings Of Genetics: Mendel’s Garden Peas

Problem 1SB: Two pairs of traits are segregating in a cross. Two parents produce 156 progeny that fall into 4...

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What are matings between the F1 progeny of pure-breeding parents that differed in 3 or more unrelated traits?
1. A gardener finds that some bean plants have pubescent leaves and others have glabrous leaves. a. Based on the results of the following crosses below, which trait is dominant, pubescent or glabrous? Which of the following crosses helped you determine the answer? b. Based on your answer in 1.a, determine the genotypes of the parents of each cross.
Which are the following are TRUE for test crosses? Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a They are useful when the genotype of a dominant phenotype is unknown. b They are always done by crossing the dominant phenotype to a homozygous recessive individual for that trait. c This test is always done in humans. d A + B e A + C f B + C
When crossing a true breeding white mouse with a true breeding brown mouse your friend tells you she recovered all black mice. But then when she crosses the F1 mice to each other she recovered 28 black mice, 8 brown mice, and 13 white mice. Can you help her explain these results? (Type out the cross and include genotypes of as many mice as possible. What phrase best describes this phenomenon? How many genes are involved are they linked or unlinked? Etc.)
If you assumed 2 genes were linked, what phenotypic ratio would you expect when crossing a female with 2 wild-type alleles and a male with 2 mutant alleles?
1- In garden peas, yellow (Y) seed color is dominant to green (y). Because yellow and green are two different forms of the same gene (seed color), they are alleles. Use a Punnett square to show a cross between two heterozygous pea plants. What are the phenotype(s) of the offspring? What are the genotype(s) of the offspring? 2- In garden peas, yellow (Y) seed color is dominant to green (y). Because yellow and green are two different forms of the same gene (seed color), they are alleles. Use a Punnett square to show a cross between two heterozygous pea plants. What are the phenotype(s) of the offspring? What are the genotype(s) of the offspring? Use the information below to answer questions 3-6 There may be a number of possible alleles for a given gene within a population. In a multiple allele system the dominance relationships between the various alleles must be considered. One of the more familiar examples of a multiple allelic system is that of the human ABO blood group. The gene…
Let us suppose that two long-winged flies were crossed and that 77 long-winged and 24 short-winged specimens were counted in the offspring. a. Will the short-winged character be dominant or recessive?B. What will the genotypes of the parents be?C. What is the observed genotype ratio?
1) Two parents are known to be right-handed (R), which is a dominant trait to left-handed. What are the genotypes of the parents if their son is left-handed? (choose) a. RR x rr b, RR x rr c, rr x rr d, rr x Rr 2) If two heterozygous traits are crossed, what will the result of the F1 offspring be? (choose) a, 1 TT: 2Tt: 1tt b, 1 TT: 2tt c, 1 TT: 1Tt: 1tt 3) An individual with the genotype AA is crossed with an individual with the genotype Aa, producing 120 offspring. The number of offspring with genotype AA will be close to. (choose) a, 90 b, 120 c, 30 d, 60
1. A woman who is heterozygous for the brown eye and blue eye alleles marries a man with blue eyes. What are the genotypes and phenotypes of the children? a) What is the genotypic ratio of the above cross (Write number next to genotype)? ___________________________________________________________________ b) What is the phenotypic ratio of the above cross? (Write number next to phenotype)? ___________________________________________________________________
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
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