4.In horses, black is dependent upon a dominant gene, B, and chestnut upon its recessive allele, b. The trotting gait is due to a dominant gene, T, the pacing gait to its recessive allele, t. If a homozygous black pacer is mated to a homozygous chestnut trotter, what will be the appearance of the F1 generation?
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- 2) In horses the color black is due to a dominant allele (B) and chestnut is due to the recessive allele (b). The trotting gait is due to a dominant allele (T) and the pacing gait to the recessive (t). a. What gametes would be produced by a homozygous black pacer? b. What gametes would be produced by a horse heterozygous for both traits?5. a. Black coat color in Cocker Spaniels is governed by a dominant allele (B) and red coat color (b) by a recessive allele. Solid pattern (S) is governed by the dominant allele of a different gene and spotted pattern (s) is recessive. A solid black male is mated with a solid red female which produces a litter of 6 pups- 2 solid black, 2 solid red, one black and white (spotted) and one red and white (spotted). Determine the genotypes of the parents. Show your work and/or explain your logic. b. A dominant gene A causes yellow color in rats. The dominant allele of another gene, R, produces black coat color. When the two dominants occur together (A_R_), they interact to produce grey. Rats with the genotype aarr are cream-colored. If a grey male and a yellow female are mated and produce 3 grey, 3 yellow, 1 cream and 1 black offspring, Determine the genotypes of the parents. Show your work and/or explain your logic. C. One gene for coat color in cats is sex-linked (X chromosome). The…3. Black coat (B) color in Cocker Spaniels is dominant, while red coat (b) color is recessive; solid pattern (S) is dominant, while spotted (s) pattern is recessive. Create a Punnett square that shows all of the possible offspring of a solid black male (BBSs) mated to a solid red female (bbSs). Include the percentage/ratio of occurrence for each phenotype. Include the percentage/ratio of occurrence for each phenotype.
- 1. In cattle, the hornless condition (H) is dominant and the horned condition (h) is recessive. bull without horns is crossed with a cow without horns. Of the four offspring, one (1) is horn and three (3) are hornless. Using Punnett squares, determine the genotype of the parental bul and the cow.23. In horses, black color is influenced by the dominant allele B and chestnut coat color is influenced by the recessive allele b. Trotting gait is due to a dominant allele T, pacing gait to the recessive allele t. A black trotter who is homozygous for both traits is crossed to a chestnut pacer. a. What are the genotypes of the Pgeneration? b. What will be the genotype and phenotype of the F1 generation? c. Draw a punnett square showing the cross of two F1 generation horses. What is the phenotypic ratio of all the combinations?1. Suppose that black hair is dominant over blonde hair and brown eyes are dominant over blue eyes. The father has black hair (heterozygous) and brown eyes (heterozygous) and the mother have blonde and blue eyes. A. Punnett Square B. Genotype of father C. Genotype of Mother D. What percent of the offspring will be totally heterozygous? E. What is the phenotypic ratio? F. What percent of the offspring will have blonde hair and blue eyes?
- 1. If one parent is homozygous dominant for a trait, that parent's genotype might be GG. If the other parent is homozygous recessive for the same trait, that parent's genotype would be gg. What are the possible genotypes of their offspring? b. How many different phenotypes might we possibly see in their offspring? 2. If a male is homozygous dominant for a trait, that parent's genotype might be DD. If the female is heterozygous for the same trait, her genotype would be Dd. a. How many genetically different sperm can the male produce? b. Using a Punnett square, determine the expected genotypic ratios of their offspring. What are the expected phenotypic ratios? 3. In garden peas, the gene for red flowers (R) is dominant over the gene for white flowers (r). If pollen (cells containing sperm nuclei) from the anther (male reproductive organ) of a homozygous red-flowered plant is added to the pistil (female reproductive organ containing the egg) of a white- flowered plant: a. c. What would be…4. The inheritance of coat colour in cattle controlled by multiple alleles with a dominance hierarchy as follows: S > sh > sc > s. The S allele produces a white band all over the cattle’s body known as ‘Dutch band’, the sh allele produces spots on the skin known as ‘Hereford’, the sc allele produces solid colour, and the s allele produces ‘Holstein’ spots. Homozygous ‘Dutch band’ males are cross to ‘Holstein’ females. The F1 females are crossed to ‘Hereford’ males of the shsc genotype. With the aid of genetic diagram, determine the expected genotypic and phenotypic frequencies in the F2 progeny.12. A heterozygous agouti mink is bred with a true-breeding white mink. Of the three offspring, one is an agouti male, one is a white male, and one is a black female. What is thesimplest explanation as to coat colour inheritance in these mink? the agouti allele is sex-linked a single gene is involved with the agouti allele being dominant a single gene is involved with the white allele being recessive at least two genes are involved
- 2. In sesame plants, the one-pod condition (P) is dominant to the three-pod condition (p) and normal leaf (L) is dominant to wrinkled leaf (1). Pod type and leaf type are inherited independently. What would be the genotypic and phenotypic ratios of the F1 resulting from the mating of a true-breeding one-pod plant that has wrinkled leaf and a three-pod plant that has heterozygous normal leaf1. In rabbits, mono-colored fur (F) and straight ears (E) are dominant over spotted-fur and floppy ears. Your son owns a rabbit possessing white fur and floppy ears, and he mated it with another rabbit. The offspring of the rabbits turn out to be 8 in total. 4 are possessing white fur with straight ears, while the remaining 4 has spotted white and brown fur with straight ears. a. What are the traits (phenotype) present on the other rabbit mated to your son’s rabbit? Create a table to properly note the phenotypes and genotypes. Considering that your son continued breeding his rabbit to the original rabbit, what will be the probability that it will produce: b. male white fur with straight eared rabbit c. 2 male white fur with floppy eared rabbit d. 2 male white furred, straight eared rabbits and 4 female spotted white and brown, straight eared rabbitsTongue rolling (T) is dominant to non-tongue rolling (t) in humans. What phenotypic ratio is possible for offspring produced between a non-tongue roller (tt) and heterozygous (Tt) tongue roller? O A. all tongue rollers O B. all non-tongue rollers O C. 3 to 1 ratio of tongue rollers to non-tongue rollers O D. 1 to 1 ratio of tongue rollers to non-tongue rollers acer