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- Question 5 [HINT: This problem wants you to calculate gene number from the proportion of individuals in the extreme classes, not from the number of phenotypes.] A farmer has two pure-breeding varieties of tomatoes: Little Pete (average fruit diameter 2cm) and Big Boy (average fruit diameter 14 cm). The farmer crosses Little Pete and Big Boy and obtains F1 plants with fruit averaging 8cm in diameter. When he intercrosses the F1s to obtain F2s, he examines 2000 F2 plants and finds two plants that produce fruit even smaller than Little Pete and three plants that produce fruit even larger than Big Boy. From these data, how many genes can we infer are involved in controlling fruit size in these plants? What is the genotype of Little Pete? What is the genotype of Big Boy? What is the genotype of the F1s? What are the genotypes that are bigger than Big Boy? What are the genotypes that are smaller than Little Pete?Question:- 3. Wild type Drosophila has red eyes and gray body*. Autosomal recessive mutations sepia (se) and ebony (e) modify the eye and body color, respectively. What kind of a cross (or crosses) can you set up to determine whether the two genes are linked? You have several lines to choose from: a pure-breeding wild type line (where alleles for both, sepia and ebony are wild type), a double homozygous recessive line, a pure breeding sepia mutant line and a pure breeding ebony mutant line. You don’t have to use all of them. (a) Write down the cross (or crosses, if necessary) which will allow you to determine linkage; include genotypes of both crossed individuals (b) What kind of results (offspring) do you expect if the two genes are linked? (c) What kind of results (offspring) do you expect if the two genes are not linked? For (b) and (c), state the phenotypes, genotypes and numbers./d/1n5NtidRwTwUzcDkDPi5Z9P_SHPZ91A-XH-pfftLbhNc/edit (1) O pols Add-ons Help Last edit was seconds ago BIUA ミ: 12 + ext Calibri I|1 6 I 2 Section 5: Trihybrid cross and Laws of probability For a trihybrid cross, in which inheritance of alleles for three genes is tracked, drawing a Punnett square that combines all three genes may not be practical. Instead the laws of probability may be used. The product law of probabilities says that when alleles for separate genes segregate independently, we can figure out the probability of a particular combined genotype by multiplying the probability of the alleles for each gene. 13. We cross a homozygous tall pea plant with yellow, round seeds to a homozygous dwarf pea plant with green, wrinkled seeds. All the F1 offspring are all tall plants with yellow, round seeds. a. What are the expected F2 ratios (use fractions) of tall and dwarf plants? b. What are the expected F2 ratios (use fractions) of yellow and green seeds? C. What are the expected F2…
- O e. Penetrance QUESTION 10 Sickle-cell anemia is a human disorder caused by a recessive allele (HbS) for the hemoglobin gene found on chromosome #11. The normal allele (HbA) is dominant. Mary has sickle-cell anemia, and she marries Steve, who does not have the disease. Mary and Steve have one kid Rosa, who has sickle-cell anemia. What is Steve's genotype? Oa. HbS Ob. HbSHbS O c. HbAHbS O d. HbAHbA Oe. Cannot be determined ck Save and Submit to save and submit. Click Save All Answers to save all answers. 7 20 # 3 $ 4 % 5 MacBook AirE- Question 20/28 In chart 1, the offspring of the two pea plants are Aa. Use the diagrams below to answer the questions that follow. This is known as . Pea Plants A Homozygous Dominant Chart 1 Homozygous Recessive Punnett Square Heterozygous Dominant Heterozygous Recessive Aa Aa Aa Aa Chart 2 AaBb x AaBb AB Ab qe AaBb ав Key AB AABB AABB AABB AA-Green Ab AABB AAbb AaBb Aabb BB- Smooth aa - Yellow aB AABB AaBb aaBB aaBb ab AaBb y6noy - 99 Aabb aaBb aabbQuestion #1 Since experimental crosses are not performed in humans, how do we know how traits are inherited? State the name of the analysis/ chart and explain in at least one sentence.
- Question 14: You examined 8 mutants, so in theory there could be 8 complementation groups (designated below as Group A- Group H). Organize the mutant strains into complementation groups. Entry Format: Each Group: If the answer includes multiple strains, please enter the answer with no spaces, but separate the numbers with a comma, and place those numbers in sequential order (e.g. 1,2,3). Organization of groups: Go in sequential order downwards by the first number of each group. i.e. Group A: 1,2,3 Group B: 4,7 Group C:5 etc. If or once you have used up all of your groups simply type in "None" for the remainder of the groups. Group A: Group B: Group C: Group D: Group E: Group F: Group G: Group H:d/1n5NtidRwTwUzcDkDPi5Z9P SHPZ9IA-XH-pfftLbhNc/edit 1) @ Is Add-ons Help Last edit was 15 minutes ago | Calibri в I UA 12 + 3I | II 6 1 I 7. Construct a Punnett square for a cross between two heterozygous pea plants with violet flower color. a. What genotypes would you expect in the offspring? b. What percentage or ratio of each genotype would you expect in the offspring? !!!QUESTION 4. Red-green color blindness is inherited in an X-linked recessive manner. Joe is red-green color blind. Joe's mother and father both have normal vision, but his mother's father (i.e., Joe's maternal grandfather) is color blind. All of Joe's other grandparents have normal color vision. Joe has three sisters (Patty, Betsy, and Lora), all with normal color vision. Patty (Joe's oldest sister) is married to a man with normal color vision; they have two children, a 9-year-old color-blind boy and a 4-year-old girl with normal color vision. Joe marries a woman who is a carrier of the color-blind allele; they are expecting their first child. Patty & her husband are expecting their third child. L4.9 Q4 Homework • Unanswered Which of the following scenarios has a greater probability of occurring and by how much? Scenario 1: Joe's first child will be a color-blind boy. Scenario 2: Patty's third child will be a color-blind boy. Select an answer and submit. For keyboard navigation, use the…
- Match the term with the correct definition or example Question 27 options: Product of a cross between true breeding plants that make yellow peas and true breeding plants that make green peas. A description of the alleles present in an individual at one or more loci. Example: MM or Mm or mm. Example: 11q1. 4-q2. 1", meaning it is on the long arm of chromosome 11, somewhere in the range from sub-band 4 of region 1 to sub-band 1 of region 2. Under a microscope, these look exactly the same. The centromere, banding, long arm, short arm, overall length, gene locations, and order of genes are exactly the same. However, nucleotide sequences in genes on the two chromosomes can differ. the unit of heredity, the sequence of nucleotides in the exon regions specifies the sequence of amino acids in a particular polypeptide Brown allele in eye color Red eye in fruit flies Ability to synthesize alcohol dehydrogenase…Question 6 Review non Mendelian genetics. Match the term and its description. Each term can only be used once. the phenotype of F1 hybrids is somewhere between the phenotypes of the two parental varieties | Choose | two dominant alleles affect the phenotype in separate and distinguishable ways | Choose | Most genes exist in populations in more than two allelic forms | Choose | Most genes have multiple phenotypic effects [ Choose J multiple genes independently affect a single trait | Choose | expression of a gene at one locus alters the phenotypic expression of a gene at a second locus [ Choose J > > > >Question 51 How does an X-linked gene affect the inheritance pattern for a given trait? Edit Format Table 12pt v Paragraph BIUA