3. What is the phenotype and genotype of offspring in the following conditions? (use the Punnett square in each of the exercises) - An albino man and a heterozygous woman with normal pigmentation? - A color blind woman with a man with normal vision? - A man with blood type A and woman with blood type B (both heterozygous)?
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- 1. If the allelic composition of a gene is Aa, the genotype is said to be (homozygous, heterozygous). What is the probability of having "a" allele in gametes? 2. For a genotype of AaBb, what are the possible allele compositions in gametes? 3. What are the possible genotypes and phenotypes ("A" phenotype or "a" phenotype) in the offspring of a monohybrid cross Aa x Aa? 4. If the organism display a dominant phenotype for a trait ("A" phenotype), how does one determine if the genotype is homozygous or heterozygous? Please use the Punnett square to explain. 5. How many possible genotypes are there in the offspring of a dihybrid cross AaBb x AaBb? What are the possible phenotypes for such a cross? What is the phenotypic ratio for AB : Ab : aB : ab? D Focus 72°F DEA F4 PrtScr Insert Hor F5 F6 F7 F8 F9 F10 F11 F12 24 & 3. 8 E R T Y U9. Make a pedigree for each of the following situations. For each individual, write the individual's genotype (when possible) next to the individual's symbol (e.g. O xty, I Gg): a. Two parents do not have cystic fibrosis and they have a daughter with cystic fibrosis and a son who does not have cystic fibrosis. The daughter grows up and she mates with a male who does not have cystic fibrosis. Their only child is a boy and he has cystic fibrosis. b. A man with hemophilia mates with a female without hemophilia. They have one son and one daughter. The daughter has hemophilia and the son does not have hemophilia. The son grows up, and he marries and mates with a female. Their only child is a boy, and he has hemophilia.1. If a person's genotype for gene a and gene b is AaBb, what are the possible allelic compositions in a gamete (What alleles for gene a and gene b can be found in a gamete)? 2. Gene p specifies flower color. The dominant P allele specifies purple color, the recessive p allele specifies white color. What is the phenotypic ratio of purple flower : white flower in a monohybrid cross? 3. Gene y specifies seed color. The dominant Y allele specifies yellow color, the recessive y allele specifies green color. Gene s specifies seed skin. The dominant S allele specifies smooth skin, the recessive s allele specifies wrinkled skin. What is the phenotypic ratio of yellow color smooth skin : yellow color wrinkled skin : green color smooth skin : green color wrinkled skin for the offspring of a dihybrid cross? 4. Please consider the cross AABBCC x Aabbcc. What is the probability of producing an offspring with AABbCc genotype? What is the probability of producing an offspring with Aabbcc genotype?
- 25. List the three alleles for blood: 26. List the genotypes for blood: 27. List the phenotypes for blood: 28. A type of chicken shows codominance with black (B) being codominant with white (B'). The heterozygous condition is checkered. Cross a checkered rooster with a white hen. Show the following: Genotypes: Phenotypes: Genotypic Ratio: Phenotypic Ratio:8. In certain breeds of dogs, two different sets of alleles determine the color pattern. Black color is dominant and red color is recessive; solid color is dominant and white spotting is recessive. A homozygous black-and-white spotted male is crossed with a red-and-white spotted female. What is the probability of their producing a solid black puppy? Show your work.Two parents one heterozygous normal (Aa) and other is homozygous recessive albino (aa) 1.what is the percentage that their offspring will be normal? 2 .what is the percentage that their offspring will inherit albinism?
- 7. The ability to roll your tongue (R) is dominant to lack of this ability (r). A. What is the genotype of a man who can roll his tongue if his father couldn’t? B. If a man who is heterozygous for tongue rolling marries a woman who is heterozygous, what would you predict for the genotypes and phenotypes of their children?4. What are the possible phenotypes and genotypes of the F1 generation if the P generation consisted of the following cross: a plant that is homozygous dominant for flower color and homozygous dominant for pod color was crossed with a plant that is heterozygous for flower color and homozygous dominant for pod color? Dominant for flower color – P (purple) Recessive for flower color = p (white) Dominant for pod color =G (green) Recessive for pod color = g (yellow) %3D P1: PP X GG Рр X GG PG PG PG PG PG PPGG PPGG PPGG PPGG PG PPGG PPGG PPGG PPGG PPGG PPGG Pp pG PPGG PpGG PPGG PpGG Genotypes: Phenotypes: Genotypic Ratio: Phenotypic 田Part 1 - High School Blues Evan and Alexia had been happily married for seven years and had a delightful five-year-old son named Ryan. One day, while going through his old high school biology textbook, Evan stumbled on some troubling information. In the section on the genetics of eye color, he read that two blue-eyed parents cannot produce a brown-eyed child. This was disturbing to him because both he and Alexia had blue eyes, but Ryan had brown eyes. He and Alexia were very much in love and Evan didn't believe his wife had been unfaithful. Puzzled, he questioned his wife, who confirmed she had been faithful to him. Evan had known Alexia long enough to recognize when she was lying and detected nothing but honesty in her response. What is going on?
- 6. A man with type B blood marries a woman with type A blood. They have the first child with bloodtype O.a. What are the genotypes of the father and the mother?b. What is the genotype and phenotype of the baby? 7. A man with type O blood marries a woman with type AB blood. What is the predicted genotypicand phenotypic ratios of their children?2. In a summer squash, white fruit color (W) is dominant over yellow fruit (w) and disk-shaped fruit (D) is dominant over sphere-shaped fruit (d). If a squash plant true-breeding for white, disk-shaped fruit is crossed with a plant true-breeding for yellow, sphere-shaped fruit, what are the possible genotypes and phenotypes of their offspring. 3. In mice, the ability to run normally is a dominant trait. Mice with this trait are called running mice (R). The recessive trait causes mice to run in circles only. Mice with this trait are called waltzing mice (r). Hair color is also inherited in mice. Black hair (B) is dominant over brown hair (b).For each of the following problems, determine the parent genotypes, determine possible gametes then construct a Punnett Square to solve.a. Cross a heterozygous running, heterozygous black mouse with a homozygous running, homozygous black mouseb. Cross a homozygous running, homozygous black mouse with a heterozygous running brown mouse.Part 2: Non-Mendelian Genetics 6. For each of the genotypes below, list all possible phenotypes. Purple Flowers are dominant white flowers are recessive and heterozygous flowers are lavender. PP- Pp- pp Brown eyes are dominant, blue eyes are recessive, and heterozygous eyes are green. BB- Bb - bb- Black fur is dominant, white fur is recessive, and heterozygous fur is grey. FF - Ff- ff - 7. A woman with type A blood has a child with a man with type AB blood. Show ALL the possible crosses the child may have.