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Two alleles should be present to affect the child in the recessive inheritance.
Single allele is enough to affect the child in the dominant inheritance.
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- Mendel performs a cross using a true-breeding pea plant with round, yellow seeds and a true- breeding pea plant with green, wrinkled seeds. What is the probability that offspring will have green, round seeds? Calculate the probability for the F1 and F2 generations.Explain the pattern of inheritance and write in the genotypes of the numbered individuals. Indicate possible patterns of inheritance for the RARE traits shown in each of the 4 pedigrees below (a-d). Indicate which individuals are definitely heterozygous and possibly heterozygous (give probability). If individual bIII-1 marries individual bIII-6 what phenotypic ratio would you expect among their offspring?The accompanying pedigree shows a family in which one child (II-1) has an autosomal recessive condition. On the basis of this fact alone, provide the following information. 1) What is the chance that among the three children in generation II who have the dominant phenotype, one of them is AAAA and two of them are AaAa? (Hint: Consider all possible orders of genotypes.) Express your answer to two decimal places.
- Identify the pattern of inheritance shown in each of the following pedigrees. If the pedigree illustrates more than one (1) mode of inheritance, just choose one. Afterwards, determine the genotype and phenotype of the first 5 individuals in each pedigreeUsing Mendelian symbols, our cross is PpYyRr × Ppyyrr. What fraction of offspring from this cross are predicted to exhibit the recessive phenotypes for at least two of the three characters?. Which part of the pedigree in Figure 2-23 in your opinion best demonstrates Mendel’s first law?
- Working with the definitions of penetrance and expressivity, analyze the following pedigree and assume that the father of the proband is homozygous for a rare trait. (Consider a rare trait here to be less than 1 in 30,000.) What pattern of inheritance other than autosomal recessive could explain this pedigree? In particular, explain the genotype and phenotype of the proband (arrow).. When Mendel crossed a large number of tall pea plants with short pea plants, all F1 plants were tall. The F2 generation was created by self-pollinating the F1 plants. Complete a genetic cross of F2 to show the genotypes and phenotypes of the offspring. State the ratio of phenotypes expected in the F2 offspring. Mendel’s First Law of inheritance states that, “…the alleles of a given locus segregate into separate gametes.” Explain how the genetic diagram above proves this law. (AC 2.1) can i get help please.The following pedigree shows the inheritance of deafmutism.a. Provide an explanation for the inheritance of thisrare condition in the two families in generations I andII, showing the genotypes of as many persons aspossible; use symbols of your own choosing.b. Provide an explanation for the production of onlynormal persons in generation III, making sure that yourexplanation is compatible with the answer to part a
- Mendelian ratios are modified in crosses involving autotetraploids.Assume that one plant expresses the dominant trait greenseeds and is homozygous (WWWW). This plant is crossed to onewith white seeds that is also homozygous (wwww). If only onedominant allele is sufficient to produce green seeds, predict theF1 and F2 results of such a cross. Assume that synapsis betweenchromosome pairs is random during meiosis.Chromosomes undergo division during meiosis. Such chromosomal behaviors are consistent with Mendel's laws of a. Unit Characters b. None of these c. Dominance and Recessiveness d. Independent Assortment e. Secondary Nondisjunction Chromosomes undergo division during meiosis. Such chromosomal behaviors are consistent with Mendel's laws of a. Unit Characters b. None of these c. Dominance and Recessiveness d. Independent Assortment e. Secondary NondisjunctionGiven a cross between these two parents: BbCcDDEEFfGgHhjj x BbCcddEeFfGgHHjj where traits B, E, H, J exhibit Mendelian inheritance; C, and F exhibit incomplete dominance; D, and G exhibit co-dominance answer the following: How many phenotypes can be expected from the cross?