A farmer raises pigs. She found that some have white belts and others do not. The white-belted allele (B) is dominant to the non-belted allele (b). Cross a heterozygous belted pig and a non-belted pig.
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- Genetics Problem: "Which of the following is typically associated with an autosomal recessive pattern of inheritance?" a. an affected offspring has one or more affected parents b. two affected heterozygous individuals will have 25% of their offspring unaffected c. an affected offspring has two unaffected parents d. an affected individual with one affected parent will have 50% of its offspring affectedD) Genetics Problem show the table and word In certain breeds of chickens, the allele "B" is responsible for black feathers whereas the contrasting allele "b" produces feathers that are white. Another r pair of alleles influences the shape of the feathers. "F" produces straight feathers whereas the contrasting gene for "f results in the frizzled condition. Give the genotypic and phenotypic ratios to be expected from the following cross: white, frizzled hen with a heterozygous black, homozygous straight rooster. Genotypic Ratio: Phenotypic Ratio:Genetics Problems. Show your crosses. It must contain: (a) parental genes, (b) genotypic ratio, (c) phenotypic ratio, (d) hybrid cross and (e) other answer needed in the question. A. Cock-feathering in chickens is a trait limited to expression only in males and is determined by the autosomal recessive genotype hh. The dominant allele H produces henfeathered males. All females are hen-feathered regardless of genotype. A cock-feathered male is mated to a female. Show the cross.
- Keeping it in the family!”- How do you think consanguinity is increasing the risk factors of genetic disorders? Explain with examples (at least two). It won’t be possible to change the tradition all of a sudden. If you are a clinical geneticist, how you will be managing this type of community?Question:- You are setting up a Mendelian tetra-hybrid (4 gene) cross. What are possible genotypes for the parents?Question:- For a simple cross between a purple-flowered plant and a white-flowered plant, where purple is dominant over white. a. Show the F2 in a Punnett square. What are the proportions of genotypes and phenotypes? Express as fractions, decimal fractions and ratios. b. Now imagine that half of the pollen carrying the recessive allele die before reaching their target, while those carrying the dominant allele are unaffected; what are the proportions of genotypes and phenotypes now?What does this tell you about Mendel’s principle of segregation?
- Genetics Problems. Show your crosses. It must contain: (a) parental genes, (b) genotypic ratio, (c) phenotypic ratio, (d) hybrid cross and (e) other answer needed in the question. A. Let us consider two sex-influenced traits simultaneously, pattern baldness and short index finger, both of which are dominant in men and recessive in women. A heterozygous bald man with long index finger marries a heterozygous long-fingered, bald woman. Determine the phenotypic expectations for their children.Question:- Why did Mendel observe the principle of uniformity? Because all traits in peas are fully controlled by genotype Because Mendel only worked with discontinuous traits, which give only two classes of phenotypes Because Mendel worked with very large number of progeny All of the aboveSubject: Genetic problems 6. how would you recognize a line of garden peas that had become genotypically pure for a given trait? 7. A cross of two pink-flowered plants produces offspring whose flowers are red, pink, or white. Defining your genetic symbols, give all the different kinds of genotypes involved, and the phenotypes they represent. 9. In snapdragons, red flowers (R) are incompletely dominant to white (r), the hybrid being pink; narrow leaves (N) are incompletely dominant to broad leaves (n), the hybrid being intermediate in width ("medium"). show the genotypes and phenotypes for the progeny of a cross between a. red medium and pink medium plant b. a pink medium and white narrow c. two identical dihybrids 12. In guinea pigs, short is dominant to long. A short-haired guinea pig was mated to a long-haired one. What proportions of the offspring (F1) will be expected to be: a. homozygous short-haired b. homozygous long -haired c. heterozygous short-haired d. heterozygous…
- ACTIVITY 3: Incomplete dominance vs. codominance Coat color in dragons is controlled by 2 alleles. A black dragon is crossed with a white dragon and all of the offspring are gray. Are the alleles incompletely dominant or codominant? ___ Explain (how do you know)? What would offspring of the other type probably look like? __Question: Suppose the progeny were crossed. Fill in the Punnett Squares below and answer the following questions. Seed Color Seed Shape R r A a In a pea plant experiment, the allele (R) producing yellow seed color is dominant, and the allele (r) producing green seed color is recessive. A homozygous recessive genotype would produce green seeds. Similarly, the allele (A) producing round seed shape is dominant to the allele (a) that produces wrinkled seed shape. A homozygous recessive genotype would produce wrinkled seeds. Both traits sort independently of each other. Given a pure-breeding cross between a round, green pea plant and a wrinkled yellow plant, complete the rest of the Punnett Squares below, and answer the following questions. R R A A RA Ra Ra raGenetics Problems. Show your crosses. It must contain: (a) parental genes, (b) genotypic ratio, (c) phenotypic ratio, (d) hybrid cross and (e) other answer needed in the question. An albino is a person with no pigmentation in his skin, eyes or hair. Normal pigmentation is (A) is dominant over albino (a). A normal pigmented man marries a homozygous normal woman. What would the expected appearances of the children be