In guinea pigs, the allele for short hair (S) is dominant. Show the cross for a homozygous short haired guinea pig and a long haired guinea pig. Show all five steps to solving the problem.
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In guinea pigs, the allele for short hair (S) is dominant. Show the cross for a homozygous short haired guinea pig and a long haired guinea pig. Show all five steps to solving the problem.
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- In rabbits, an allelic series helps determine coat color. The alleles, in order of dominance, are listed below. C=full coat color Cch-chinchilla Ch-himalayan c=white What is the predicted outcome for a CCh rabbit crossed with a Cchc rabbit? Draw out the cross and show the predicted genotypes and phenotypes for the offspring.In rabbits, white coat color (CW) and black coat color (CB) are codominant, and both of these alleles are dominant over albino (c); heterozygotes (CWCB) are spotted. Consider a cross between a heterozygous black-coated rabbit and a homozygous white-coated rabbit.In dogs, dark coat color phenotype (D) is dominant over albino (a) and short hair (S) is dominant over long hair (1). Assume that these phenotypes are caused by two independently assorting genes and write as much as you can, the genotypes of the parents in the cross below. D, a, S and I represent phenotypes Y indicates the presence of progeny with this phenotype , whereas N indicates the absence of progeny with this phenotype PARENTS PHENOTYPES TYPES of PROGENY PHENOTYPE D,S D,I a,S a,l D,S X a,l Y Y
- In dogs, dark coat color phenotype (D) is dominant over albino (a) and short hair (S) is dominant over long hair (I). Assume that these phenotypes are caused by two independently assorting genes and write as much as you can, the genotypes of the parents in the cross below. D, a, S and I represent phenotypes Y indicates the presence of progeny with this phenotype, whereas N indicates the absence of progeny with this phenotype PARENTS PHENOTYPES TYPES of PROGENY PHENOTYPE D,S D,I a,S a,l D,S X a,l Y Y NFor the following cross, show the P generation Genotypes and the Phenotypic ratio that would be seen in the F1 and F2. Remember, to produce the F2 generation you want to cross Heterozygotes from the F1. d) Genes 1 and 2 exhibit Epistasis (9:6:1) and Gene 3 is an Autosomal Dominant. In the P generation, the Male is Homozygous Recessive for the Genes showing Epistasis. Use E1, E2 and E3 to represent the Phenotypes shown by Epistasis. Report your results in the following format: P = aabb x AABB, F1 = 100%AaBb (Phenotype), and %3! F2 = 9/16 A_B_ (Phenotype), 3/16 aaB (Phenotype), 3/16 A_bb (Phenotype), 1/16 aabb (Phenotype)In mice, the allele C for colored fur is dominant over the allele c for white fur, and the allele V for normal behavior is dominant over the allele v for waltzing behavior, a form of discoordination. Give the genotypes of the parents in each of the following crosses: (a) Colored, normal mice mated with white, normal mice produced 29 colored, normal and 10 colored, waltzing progeny. (b) Colored, normal mice mated with colored, normal mice produced 38 colored, normal, 15 colored, waltzing, 11 white, normal, and 4 white, waltzing progeny. (c) Colored, normal mice mated with white, waltzing mice produced 8 colored, normal, 7 colored, waltzing, 9 white, normal, and 6 white, waltzing progeny.
- A male dog with the genotype GgBb is crossed with a female dog with the genotype GgBb. Set up a punnet square Note: Gray hair (GG) is dominant over white hair (gg); Black eyes (BB) is dominant over red eyes (bb). (a) How many out of 16 have gray fur and black eyes? (b) How many out of 16 have gray fur and red eyes? (c) How many out of 16 have white fur and black eyes? (d) How many out of 16 have white fur and eyes red? Write the phenotypic ratio.In tomatoes, red fruit color (R) is dominant over yellow fruit color (r). Do the following crosses: Rr x rr Rr x RR rr x RR Rr x Rr rr x Rr rr x rr Show your Punnett square for each cross. For each cross also show the genotypic and phenotypic ratios.You are doing a cross with Drosophila using the following two traits. Curly wings is dominant over straight wings, and round eyes is dominant over elliptical eyes. You cross a female fly that is known to be heterozygous for both genes with a male that is heterozygous for the wing gene but has elliptical eyes. This cross produces 74 flies with curly wings and round eyes, 61 with curly wings and elliptical eyes, 24 with straight wings and round eyes, and 21 with straight wing and elliptical eyes. Calculate the expected phenotype ratios for this cross, then use the chi-square test to see if the observed data are consistent with the expected numbers.
- Mouse fur color is affected by TWO unlinked loci. GG or Gg mice are agouti. Mice with genotype gg are albino since all pigment production is blocked, regardless of the phenotype at the second locus. At the other locus, the F allele (agouti coat) is dominant to the f allele (black coat). How many black mice would result from a cross between two agouti mice of genotype GgFf? (just write in the numeral)A dihybrid cross is performed between two heterozygous individuals (heterozygous for two traits). The resulting offspring had 62 individuals that were dominant for trait 1 and 2 (D/D), 7 individuals that were R/R, 21 individuals that were R/D, and 25 individuals that were D/R. Using Mendelian inheritance as the null hypothesis, use χ2 analysis to determine if the trait follows Mendelian inheritance. A. How many D/D phenotype offspring are expected? B. How many R/D phenotype offspring are expected? C. How many degrees of freedom are there? D. What is your calculated χ2 value? E. What is the critical value if using a probability of 0.05? F. Does the trait follow Mendelian inheritance?Purple flowers are dominant to white flowers. Identify the phenotypefor the following genotype Ff, FF, ff and determine if the genotype is heterozygous or homozygous. * For each row, you should select two columns. Purple flowers White flowers Heterozygous Homozygous Ff FF ff Brown eyes are dominant to blue eyes. Identify the phenotype for the following genotype BB, Bb, bb and determine if the genotype is heterozygous or homozygous. * 口 ロ口