(Purple) (White)12. Two plants, both heterozygous for the gene that controls flowercolor are crossed. Give the expected RATIOS for each genotype andphenotype.Phenotype Ratio -Gentoype Ratio -13. In guinea pigs, the allele for short hair is dominant over long hair.Two short haired guinea pigs are mated several times. Out of 100offspring, 25 of them have long hair.What are the probable genotypes of the parents?(Show the cross to prove it!)

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Description: (Purple) (White)12. Two plants, both heterozygous for the gene that controls flowercolor are crossed. Give the expected RATIOS for each genotype andphenotype.Phenotype Ratio -Gentoype Ratio -13. In guinea pigs, the allele for short hair is dominant

According to Mendel, the allelic pairs of the height-related genes, TT and tt, are identical in…

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(Purple) (White) 12. Two plants, both heterozygous for the gene that controls flower color are crossed. Give the expected RATIOS for each genotype and phenotype. Phenotype Ratio - Gentoype Ratio - over long hair.

(Purple) (White) 12. Two plants, both heterozygous for the gene that controls flower color are crossed. Give the expected RATIOS for each genotype and phenotype. Phenotype Ratio - Gentoype Ratio - over long hair.

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

Section12.2: Later Modifications And Additions To Mendel’s Principles

Problem 2SB: A true-breeding rabbit with agouti (mottled, grayish brown) fur crossed with a true-breeding rabbit...

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Incomplete Dominance 1. In snapdragons, red flower color (R) is incompletely dominant over white flower color (r). The hybrids or heterozygous plants (Rr) are pink in color. a) Show the genotype for a white flower and for a red flower. b) If a red-flowered plant is crossed with a white-flowered plant, what are the genotypes and phenotypes of the F1 generation plants? Show your work. c) What genotypes and phenotypes will be produced in the F2 generation? Show your work? the the o doa A t r th s beirs ard the phenorypic and wo ran aials pring fro d) How did the genotypic and phenotypic ratio compare to each other in this incomplete dominance cross? gonarypi and e) What would the phenotypic ratio have been if this had been complete dominance?
7-8. Assume that white color is dominant over yellow color in squash. If pollen from the anthers of a heterozygous white-fruited plant is placed on the pistil of a yellow- fruited plant, show using ratios the genotypes and phenotypes you would expect the seeds from this cross to produce. Genotypes = 1/2 Ww 1/2 Ww = 1:1 ratio | Phenotypes = All white = 1:0 ratio Genotypes = 1/2 WW 1/2 ww = 1:1 ratio | Phenotypes = 1/2 white 1/2 yellow = 1:1 ratio Genotypes = 3/4 Ww 1/4 ww = 1:1 ratio | Phenotypes = 3/4 white 1/4 yellow = 1:1 ratio Genotypes = 1/2 Ww 1/2 ww = 1:1 ratio | Phenotypes = 1/2 white 1/2 yellow = 1:1 ratio
4:12 8. A heterozygous round seeded plant (Rr) is crossed with a homozygous round seeded plant (RR). Give the expected probabilities for each genotype and phenotype. 9. A homozygous round seeded plant is crossed with a homozygous wrinkled seeded plant. What are the genotypes of the parents? X 10. In pea plants purple flowers are dominant white flowers. If two white flowered plants are crossed, what percentage of their offspring will be white flowered? % Previous What percentage of the offspring will also be homozygous? ZOOM + 12. Two plants, both heterozygous for the gene that controls flower color are crossed. Give the expected RATIOS for each genotype and phenotype. Phenotype Ratio - Gentoype Ratio - 11. A white flowered plant is crossed with a plant that is heterozygous for the trait. What percentage of the offspring will have purple flowers? 13. In guinea pigs, the allele for short hair is dominant over long hair. Two short haired guinea pigs are mated several times. Out of 100…
1,Show the cross between two people with Type AB blood. What is the genotypic and phenotypic outcome of such a cross? 2. Incomplete dominance = If a Red (RR) and White flower (rr) were crossbred, resulting in 100% Rr, what phenotype(s) would been seen according to the rules of IN-complete dominance? 3. Two parents think their baby was switched at the hospital. Its 1968, so DNA fingerprinting technology does not exist yet. The mother has blood type “O,” the father has blood type “AB,” and the baby has blood type “B.” Mother’s genotype: _______ Father’s genotype: _______ Baby’s genotype: ______ or _______ Was the baby switched? ____________________________________________________
2/2 - A heterozygous black haired male hamster is crossed with a heterozygous black haired female hamster. Give the genotypic and phenotypic ratios of the offspring. If they had 12 babies, how many would you expect to be white? 10. Key Parents: Punnett Sqare: B%3= b- BB: Bb: bb Genotypic Ratio: black: white Phenotypic Ratio: It they had 12 babies, how many would vou expect to be white?
9-10. In watermelons, the genes for green color and short shape are dominant over their alleles for striped color and for long shape. Suppose a plant with long striped fruit is crossed with a plant heterozygous for both of these characters. What phenotypes would this cross produce and in what ratios? Phenotypes = 1/2 short/green 1/2 long/green= 1:1 ratio Phenotypes = 1/4 short/green 1/4 short/striped 1/4 long/green 1/4 long/striped = 1:1:1:1 ratio Phenotypes = 3/4 short/green 1/4 long/green = 3:1 ratio Phenotypes = All short/green = 1:0 ratio
3. Short-tailed pup distribution. In mice, the dominant T allele results in a short tail. Homozygous T/T genotype is lethal, which means mouse embryos with this genotype die before they are born. Homozygous t/t is normal, with normal tail. A cross between two short-tailed mice produces a litter of 5 pups. a). What are the genotype(s) of the two short-tailed mice used in the cross? b). What are the possible genotypes and phenotypes of the 5 pups? What are their perspective ratio?
For questions 1-3, consider a pea plant homozygous for tall stems and green seeds crossed with a plant dihybrid for tall stems and yellow seeds.
Cases of Incomplete Dominance 1. When a straight-haired mouse is crossed with a curly-haired mouse, the result is always wavy hair. Two wavy-haired mice cross. a. What are the genotypes of the two wavy-haired mice? b. Draw the Punnett Square of a cross between two wavy-haired mice, and show the probable genotypes of their offspring. с. What is the expected phenotype ratio of the offspring? % d. What is the expected genotype ratio of the offspring?
1-Show the results of a dihybrid cross for the F1 and F2 generation between P generation of a pea plant that is homozygous dominant for purple flower and yellow pea seed with another pea plant that is homozygous recessive for white flower and green pea seed. Clearly show the cross indicating BOTH genotype and phenotype for each generation. How many offspring in the F2 generation will have these phenotypes? 2-What is the probability of a woman who is a carrier for the blood disease hemophilia producing a son with hemophilia if she marries a man who does not have hemophilia? What is the probability of her daughters having hemophilia? Explain why the probability of getting this disease is different for sons versus daughters in this case. Your work should clearly indicated sex, genotype and phenotype (carrier or affected).
9 The color of Andalusian chickens results from the inheritance of alleles that exhibit incomplete dominance. Black Andalusian chickens result when two alleles for melanin production are inherited (MM). White-splashed chickens result from the inheritance of two copies of a different allele (mm). The heterozygous condition (Mm) results in their famous bluish color. Predict the genotypes and phenotypes from the following crosses: MM X mm and Mm x Mm. a. genotype of male b. genotype of female c. genotypes of offspring d. phenotypes of offspring e. genotype of male f. genotype of female g. genotypes of offspring h. phenotypes of offspring