Give typing answer with explanation and conclusion Suppose that in a given species of plant the color of the flowers is determined by a gene whose dominant allele is embryonic lethal in homozygosis (AA). Two heterozygous plants are crossed (Aa x Aa) to produce 120 individuals. How many individuals in the progeny are expected to present the recessive phenotype? please explain None 30 40 120

Give typing answer with explanation and conclusion Suppose that in a given species of plant the color of the flowers is determined by a gene whose dominant allele is embryonic lethal in homozygosis (AA). Two heterozygous plants are crossed (Aa x Aa) to produce 120 individuals. How many individuals in the progeny are expected to present the recessive phenotype? please explain None 30 40 120

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter3: Transmission Of Genes From Generation To Generation

Section: Chapter Questions

Problem 13QP: More Crosses with Pea Plants: The Principle of Independent Assortment Given the following matings,...

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Give typing answer with explanation and conclusion Human ABO blood type is controlled by the I locus and has three possible alleles. The alleles which code for type A blood (IA) and type B blood (IB) are codominant, while the allele for type O blood (i) is recessive. In a cross between a person with a genotype of IAi and a person with genotype IAIB, what is the probability of having three offspring with type A blood?
Give typed explanation : In peas, tall (T) is dominant to short (t). A homozygous tall plant is crossed with a short plant. The F1 are self-fertilized to produce the F2. Both tall and short plants appear in the F2. If the tall F2 are self-fertilized, what types of offspring and proportions will be produced?
Give typing answer with explanation and conclusion Suppose a woman who is homozygous for Huntington's disease has 12 children? We would expect __________ of them to have the disease. A mother who is heterozygous for the Huntington's disease gene wants to have a baby with a man who is also heterozygous for the gene. What is the likelihood their baby will not have Huntington's disease?
Give typing answer with explanation and conclusion What is the expected (predicted) frequency of the A2 allele if it is observed that 26 individual have the homozygous dominant genotype, 62 individuals have the heterozygous genotype and 75 individuals have the homozygous recessive genotype?
Give typing answer with explanation and conclusion Approximately 1 out of every 10,000 Caucasians in the USA are born with the recessive disease cystic fibrosis. If this trait is in Hardy-Weinberg equilibrium, approximately how many people are carriers?
Give typing answer with explanation and conclusion Red/green colorblindness is inherited as an X-linked recessive trait in humans. A woman with normal vision, whose father was colorblind, marries a man with normal vision. Predict the color vision of their sons and daughters. Provide a probability for each offspring, depending on their sex. Write a pedigree consistent with this inheritance.
Give only typing answer with explanation and conclusion to all parts Two true-breeding varieties of maize, one 11 cm high and the other 47 cm high were crossed and the resultant F1 hybrids were then crossed to generate the F2 . In the F2 there were a total of 13,923 plants with a continuous variation in heights between the two extremes and with only 3 plants as large as 47 cm high and 5 plants of 11 cm high. a) How many i) genes and ii) how many alleles are involved in determining height in this plant? b) What is the contribution of each dominant allele to the phenotype in cm?
Give typing answer with explanation and conclusion Consider a pair of homologous chromosomes heterozygous for three genes (e.g. ABC / abc) during prophase I of meiosis. Let the sister chromatids of one homolog be numbered 1 and 2; and the sister chromatids of the other homolog be numbered 3 and 4. A crossover that would result in genetic recombination (e.g., Abc or aBC) could involve which chromatids? a. 1 & 2 or 3 & 4 b. 1 & 3 or 2 & 4 c. 1 & 4 or 2 & 3 d. 1 & 3 or 1 & 4 or 2 & 3 or 2 & 4 e. any two of the four chromatids
Give typing answer with explanation and conclusion Directions: For the following problem, calculate the probability of the offspring between the cross using the sum and product rule. The parent generation has genotypes of Aa Bb Cc and AA Bb CC. What is the probability the F1 generation would be AA bb cc?
Give typed explanation Plants used in first-generation crosses were called F2, Second FilialF1, First FilialP, ParentalG, Grandparent. After each cross, Mendel collected the seeds belonging to these plants and grew them the following season. These offspring were called the F2, Second FilialF1, First FilialP, ParentalG, Grandparent generation. Once Mendel examined the characteristics in that generation of plants, he allowed them to self-fertilize naturally. He then collected and grew the seeds from the plants to produce the F2, Second FilialF1, First FilialP, ParentalG, Grandparent generation.
Height of the plant if a homozygous tall pea plant is crossed with a homozygous short pea plant, what are the possible genotype and phenotypes of the offspring? Legend: T- tall pea plant t- short pea plant Genotypes of the parents TT x tt Question 1. what is the genotypic ratio 2. what are the possible phenotypes of the offspring? 3. What is the phenotypic ratio? 4. what is the probability of having a short trait?
Give typing answer with explanation and conclusion to all parts The chromosomes drawn below are found in a human skin cell. The lines represent the chromosomes themselves. The letters indicate the location of a particular version of a gene. a) T/F An individual’s offspring are more likely to inherit a D1 and R together than a D1 and T9 together. b) T/F About 50% of the egg cells from this individual will have both T9 and BA5. c) T/F Because r is recessive, the frequency at which the r version of the gene occurs in a population is lower than the frequency at which the R version occurs in the population. d) T/F If the protein produced by the BA gene is involved in the formation of ovaries, then the BA gene is likely located on a sex chromosome. e) T/F Because the genes shown here are found in skin cells, these genes code for proteins required for skin cell function.