. What is the probability of producing a child that willphenotypically resemble either one of the two parentsin the following four crosses? How many phenotypically different kinds of progeny could potentiallyresult from each of the four crosses?a. Aa Bb Cc Dd × aa bb cc ddb. aa bb cc dd × AA BB CC DDc. Aa Bb Cc Dd × Aa Bb Cc Ddd. aa bb cc dd × aa bb cc dd

. What is the probability of producing a child that willphenotypically resemble either one of the two parentsin the following four crosses? How many phenotypically different kinds of progeny could potentiallyresult from each of the four crosses?a. Aa Bb Cc Dd × aa bb cc ddb. aa bb cc dd × AA BB CC DDc. Aa Bb Cc Dd × Aa Bb Cc Ddd. aa bb cc dd × aa bb cc dd

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Description: . What is the probability of producing a child that willphenotypically resemble either one of the two parentsin the following four crosses? How many phenotypically different kinds of progeny could potentiallyresult from each of the four crosses?a. Aa

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter15: Genomes And Genomics

Section: Chapter Questions

Problem 2QP: Hemophilia and color blindness are both recessive conditions caused by genes on the X chromosome. To...

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Figure 8.10 In pea plants, purple flowers (P) are dominant to white (p), and yellow peas (Y) are dominant to green (y). What are the possible genotypes and phenotypes for a cross between PpYY and ppYy pea plants? How many squares would you need to complete a Punnett square analysis of this cross?
Outline the basic hybridization research done by Mendel when crossing a true breading violet flowered plant with a true breeding white flowered plant? In your answer you should indicate the parental generation, the F1, and the F2 results.
If two gene pairs A and a and B and b are assorting independently with A dominant to a and B dominant to b, what is the probability of obtaining: a. an AB gamete from an AaBb individual? b. an AABB zygote from an AaBb x AaBb cross? c. an aaBb offspring from an AaBB x aabb cross? d. a phenotype aB from an Aabb x aaBb cross? e. an ab gamete from an aaBB individual?
What does a Punnett square tell you? a.The inheritance pattern for a pair of alleles b.The phenotype probabilities of offspring for a given cross c.The number of offspring who will have a particular genotype for a given cross d.The genotype probabilities of offspring for a given cross 2.What would be the most likely karyotype for somebody described as “hemizygous positive for a Y-linked trait”? a.Y+ Y+ b.X Y+ c.X+ Y+ d.X+ Y- 3.X-linked ichthyosis is an X-linked recessive trait that manifests in part as dry, scaly skin (“ichthy-” = fish or fish like). Suppose a couple are considering having a child together. Parent A is heterozygous for the ichthyosis allele while Parent B is hemizygous negative for the ichthyosis allele. What is the probability their child would be unafflicted with ichthyosis but be a carrier of the ichthyosis-causing allele? a.0% b.25% c.50% d.75% e.100% 4.If somebody has the phenotype of…
In tomatoes, round fruit is dominant over elongated fruit, and smooth skin is dominant over fuzzy or peach skin. An RS/rs plant is test-crossed and 1000 progeny are obtained. If the genes have a frequency of recombination of 26%, how many will be elongated and peach skin? A. 370 B. 260 C. 130 D. 740
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? c) What genotypes and phenotypes will be produced in the F2 generation? d) How did the genotypic and phenotypic ratio compare to each other in this incomplete dominance cross? e) What would the phenotypic ratio have been if this had been complete dominance? f) What kind of offspring can be produced if a red-flowered plant is crossed with a pink-flowered plant? g) What kind of offspring is/are produced if a pink-flowered plant is crossed with a white-flowered plant?
Genes A and B are on two different chromosomes. You construct a Punnett Square to to show the expected genotypes in the offspring of a cross between these two genotypes: AaBB x AaBb. What are the dimensions of the smallest Punnett square you can make to show the expected results? (e.g., 2x2, 4x1. Don’t worry about the order of the two numbers if they differ. That is, 4x8 is the same as 8x4)
b) You test cross an F1 fish (with genotype BbCc) and obtain 1000 offsprings in F2 generation with the following results: 474 Bbcc, 480 bbCc, 20 BbCc and 26 bbcc.1. Create and fill in a Punnet square for this cross.2. What type of cross is it? 3. Are these loci linked? 4. What are the two parental classes and the two recombinant classes of offspring? 5. What is the percentage of recombination between these two loci? Show your calculations. 6. How many map units apart are they?
If a cross produced a progeny population of 900 plants that consists of 258 with white flowers and 642 with purple flowers, which of the following is most likely? P = purple, p = white. A. They deviated from a 3:1 ratio because of epistasis. B. They are the progeny of a cross in which one parent was PP and the other was Pp. C. P is clearly semi-dominant. D. The purple phenotype is co-dominant with white E. They resulted from a cross in which the parents were of identical genotype at the P locus.
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.
Explain why a 50 percent recovery of single-crossover products is the upper limit, even when crossing over always occurs between two linked genes?
In cats, the gene for calico (multicolored) cats is both sex-linked and codominant. Due to a phenomenon known as dosage compensation, females that receive a B and an R gene have black and orange splotches on white Males can only be black or orange, but never calico. a. What would a calico cat’s genotype be? b. Show the cross of a female calico cat with a black male. What percentage of the kittens will be black and male? c. What percentage of the kittens will be calico and male? d. What percentage of the kittens will be calico and female? e. Show the cross of a female black cat with a male orange cat. f. What percentage of the kittens will be calico and female? What color will all the male cats be?