Two heterozygous black pigs are mated. Show the genotypes, phenotypes, and probabilities of the offspring. What are the genotypes of the parents? Genotypes Phenotypes In Holstein cattle, the spotting of the coat is recessive to the solid coat color. What types of offspring might be produced by a cross between two spotted animals? What are the genotypes of the parents? Genotypes Phenotypes In peas, long stem "A" is dominant over short stem, "a". Give the expected genotypes, phenotypes and the probabilities for the following crosses: a) homozygous long x short Genotypes Phenotypes b) heterozygous long x short Genotypes Phenotypes

Two heterozygous black pigs are mated. Show the genotypes, phenotypes, and probabilities of the offspring. What are the genotypes of the parents? Genotypes Phenotypes In Holstein cattle, the spotting of the coat is recessive to the solid coat color. What types of offspring might be produced by a cross between two spotted animals? What are the genotypes of the parents? Genotypes Phenotypes In peas, long stem "A" is dominant over short stem, "a". Give the expected genotypes, phenotypes and the probabilities for the following crosses: a) homozygous long x short Genotypes Phenotypes b) heterozygous long x short Genotypes Phenotypes

Science Of Agriculture Biological Approach

5th Edition

ISBN:9780357229323

Author:Herren

Publisher:Herren

Chapter4: The Science Of Genetics

Section: Chapter Questions

Problem 1SLA

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More Crosses with Pea Plants: The Principle of Independent Assortment Two traits are examined simultaneously in a cross of two pure-breeding pea-plant varieties. Pod shape can be either swollen or pinched. Pea color can be either green or yellow. A plant with the traits swollen and green is crossed with a plant with the traits pinched and yellow, and a resulting F1 plant is self-crossed. A total of 640 F2 progeny are phenotypically categorized as follows: 360 swollen yellow 120 swollen green 120 pinched yellow 40 pinched green a. What is the phenotypic ratio observed for pod shape? Pea color? b. What is the phenotypic ratio observed for both traits considered together? c. What is the dominance relationship for pod shape? Pea color? d. Deduce the genotypes of the P1 and F1 generations.
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In the fictitious monster Lochnessius coolnameii, coat color is under the control of an autosomal gene, with white coat (W) dominant over black coat (w). The monster’s ability to produce horns is a sex-influenced trait, that is dominant in males but recessive in females. Let Horned = H, and hornless = h. Consider the cross of a homozygous white & horned male with a homozygous black & hornless female. What genotypes and phenotypes are expected in the F1? What genotypes and phenotypes are expected in the F2? In what ratios? Zappy is a horned white male. It was bred to the following four females, and the results are presented here: Mother Offspring Alcremie: hornless, black 1 horned white female Blissey: hornless, white 1 hornless black female Chansey: horned, black 1 horned, white female Delcattie: hornless, white 1 hornless, black male + 1 Horned white…
In owl, barring (B) is sex-linked and dominant, the recessive allele (b) producing solid black color when homozygous. Silky feathers (s) is a recessive autosomal gene, as opposed to non-silky (S). If black cocks, heterozygous for non-silky, are crossed to barred, silky hens, what genotypes and phenotypes will be produced? (Sex linked genes can be written as XAXA for female and XAY for male since superscript function are not available) what is the genotype of the cock? What are the possible genotypes of the hen? Write the genotypes of the F1 when the hen is homozygous dominant for barring What is the phenotypic ratio? What is the genotypic ratio when the hen is heterozygous for barring? How many female carriers are present when the hen is heterozygous for barring? (use fraction)
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What is the predicted phenotypic ratio for the offspring of the following cross? Allele phenotypes: R = red, r = white, T = thin leaf, t = broad leaf Cross: RR; Tt x Rr; tt Red with thin leaves ___________ Red with broad leaves ___________ White with thin leaves ___________ White with broad leaves __________ PLEASE show work and give an explanation... Thank you!
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IN goat, black fur is dominant to red fur. the gene for this trait can be described as Bb, A homozygous black female goat nanny is crossed with a heterozygous male billy , what is the genotype and phenotype of the nanny? what is the genotype and the phenotype of the billy.
In roan cattle, red (R) and white (W) are codominant. Heterozygous individuals produce both red and white hairs, known as roan. When two roan cattle are crossed, what are the phenotypic ratios of the offspring?
A cross was performed using Drosophila melanogaster involving a female known to be heterozygous for both ebony body and sepia eyes and a male known to be homozygous for both of these recessive traits. The following data was produced from the cross. Test these data to determine if they are significantly different from the expected phenotypic ratio. Remember to use the 5% level of significance Wild eye Wild body – 102, Wild eye Ebony body – 94, Sepia eye Wild body – 100, Sepia eye Ebony body – 93. Your answer should include the hypothesized cross in genotypes, the Chi-squared value, the critical value and whether you reject or do not reject.
Thimble foxes cook color is controlled by a single gene while tail length is controlled by a separate Gene. Red coat is dominant to white coat and long tails are dominant to short tails, dominant is complete. Thimble fox one has a red coat and a long tail, its mother had a white coat and short tail. Thimble fox two has a white coat and long tail, its father had a short tail. Complete the punnets square for this cross and give the phenotypic ratio of the offspring. If there is a dominant allele for this first Street, place the gamete in the first give me a position. Then state the Phenotypic ratio.