What must be the genotypes of the parents of a colorblind daughter? Explain. If number 13 marries a normal man, what is the probability that their sons will be colorblind?
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- , Σ. K Q R. click "Turn In" on Google Classroom when you are done. 2. In pea plants, yellow seeds are dominant to green seeds. A heterozygous yellow-seeded pea plant (Yy) is crossed with a plant that has green seeds (yy). Yellow Seeds Y y Phenotype Probability (%) У Yellow Seeds: y Green Seeds: 4. In another one of Mendel's experiments. he crossed the offsprina. Two nea Hide sid US 12 Green Seeds 田Pedigree Analysis Examine the following pedigrees. 1 Examine the pedigree of achondroplasia (a form of dwarfism). a Is this trait dominant or recessive? b How do you know? c Label all of the genotypes on the pedigree chart. II Laboratory Exercise 9 Trait Genetics 113 %3DName Legrning Target: I will incorporate ratios Period into the genetics problem. Genetics Worksheet # 2 1. In pea plants, smooth peas (S) are dominant to wrinkled peas (s). Work the following crosses. a. homozygous dominant x recessive Genotypes: Phenotypes: Genotypic ratio: Phenotypic ratio: b. heterozygous x heterozygous Genotypes: Phenotypes: Genotypic ratio: Phenotypic ratio: 2, A man and his wife are both heterozygous for brown eyes (B). They have six children all of whom have blue eyes> How can this happen? List the genotypes of the parents and the children, Show the Punnett square, Parents: Kids: What is the chance that the next child will have blue eyes?
- Notes Bell Work Assignments Pedigree Chart Key How many females are carriers? |JO - Unaffected How many affected males are there? TO Carrier Complete a Punnett Square for the cross in the F4 generation. 10 Affected The affectedallele is recessive I Could the male in the F5 generation be affected? Could he be a carrier? If 'yes', what chance does he have of being affected? Of being a carrier? (answer is a fraction out of 4) Type here to search W BrNon- Mendelian patterm of inheritance. Activity 4: What's your blood type? Objective: Infer the unknown phenotypes of individuals on the basis of the known phenotypes of their family members Procedure: A. Given the blood types of the mother and the child, identify the possible blood type of the father. Mother's Blood type Father's Blood type Child's Blood type A B AB ABName: Date: Punnett Square Practice Worksheet 1) For each of the genotypes (AA, Aa or aa) below determine what the phenotype would be. Purple flowers are dominant to white flowers. PP Hairy knuckles are dominant to non-hairy knuckles in humans. HH Pp. p. Hh hh Bobtails in cats are recessive. Normal tails are dominant. TT Tt tt 2) For each of the following write whether it is homozygous dominant (HD), heterozygous (H), or homozygous recessive (HR). AA gg Ii Pp t TT Use the following information for questions 3-5: In dogs, the gene for fur color has two autosomal alleles. The dominant allele (F) codes for grey fur and the recessive allele (f) codes for black fur. Consider the 3 following cases: 3) The female dog is heterozygous. The male dog is homozygous recessive. Figure out the percentage or ratio of possible genotypes and phenotypes of their puppies by using the Punnett Square below. Place the alleles for the male parent below. One allele on each line: % of possible Genotypes: FF:…
- Oner is recessive GUIDED PRACTICE: Directions: For each scenario, complete the highlighted sections. 1. In Mendel's crosses, the round was dominant. What is the phenotype of each of the following? Genotype Phenotype RR RrName Period into the genetics problem. Genetics Worksheet # 2 1. In pea plants, smooth peas (S) are dominant to wrinkled peas (s). Work the following crosses. a. homozygous dominant x recessive Genotypes: Phenotypes: Genotypic ratio: Phenotypic ratio: b. heterozygous x heterozygous Genotypes: Phenotypes: Genotypic ratio: Phenotypic ratio: 2, A man and his wife are both heterozygous for brown eyes (B). They have six children all of whom have blue eyes> How can this happen? List the genotypes of the parents and the children. Show the Punnett square. Parents: Kids: What is the chance that the next child will have blue eyes?Switch Background P Immersive Reader 100% Page Width d. What percent of the offspring will be carriers of the white eye trait? 2. Using the same information as for question #1, cross a heterozygous red-eyed female with a red-eyed male. a. What are the genotypes of each parent? ic b. What fraction of the children will have red eyes? c. What fraction of the children will have white eyes? Pra d. What fraction of the female children will carry the white eyed trait?
- PEDIGREES: Problem 7 This pedigree shows the inheritance of atype of X-linked color blindness. It is a recessive trait. Carriers have NOT been half-shaded in this pedigree. • QUESTIONS • • • I ODO0 I. Work out who is definitely a carrier & drag the correct shape onto them. 1 2 3 4 II 1 3 2. Is it possible to work out the geno- type of individual II-I? Explain III your reasoning. 1 2 3 IV 1Practice Problem 2: Having a hairline with a widow's peak is dominant and a straight hairline is recessive (W = widow's peak; w = straight hairline). Hint: To avoid confusing alleles, use a bar over the lowercase letter OR chose a letter that doesn't look the same upper and lowercase (instead of "W" and"w" you could use "D" and "d"). Cross: A man with a straight hairline marries a woman homozygous dominant for having a widow's peak. What is the genotypic ratio and the phenotypic ratio for this cross?PEDIGREES: Problem (continued) This pedigree shows the inheritance of cystic fibrosis in this family. I • QUESTIONS ••. 5. What is the genotype of individual II-3? Use the letter "f" to 1 2 represent the disease allele. II 1 2 3 6. Individuals II-I and II-2 are sisters. Explain how it is possible for one sister to have cystic fibrosis but NOT the other. III 1 2 3