Homework Answers
1.
a. Probability of having a normal child is 25%.
b. Probability of having a child that is dwarf is 75%.
c. Probability of having a child that dies before age one from this disorder is 25%.
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Genetics and Heredity Practice Problems A. Mendelian Genetics 1. In humans, achondroplasia or "dwarfism (D) is...
2. A widow's peak (W) is dominant to a straight hairline (w), and unattached earlobes (E)...
2. A widow's peak (W) is dominant to a straight hairline (w), and unattached earlobes (E) is dominant to attached earlobes (e). Two parents, each with the genotype WwEe, have kids. a. What proportion of their offspring will have a widow's peak and unattached earlobes? b. What proportion will have unattached earlobes but have either a widow's peak or a straight hairline? 3. A woman with normal color vision, whose mother was colorblind, has children with a man with normal...
Question 9 (1 point) Achrondroplasia is a form of dwarfism caused by a dominant allele. The...
Question 9 (1 point) Achrondroplasia is a form of dwarfism caused by a dominant allele. The homozygous dominant genotype causes death, so individuals who have the condition are all heterozygous. If a person with achondroplasia mates with a person who does not have achondroplasia, what percentage of their children would be expected to have achondroplasia Question 9 options: A) 0% B) 50% C) 75% D) 100% Question 10 (2 points) This is an example of incomplete dominance. Let H-curly hair and...
Multiple Allele Problems (Characteristics That Have More Than Two Possible Forms of the Same Geno) 15....
Multiple Allele Problems (Characteristics That Have More Than Two Possible Forms of the Same Geno) 15. In humans, there are three alleles for blood type: A, B, and O. The allele for blood type A and the allele for blood type B show incomplete dominance. A person with both alleles has blood type AB. Both A and B dominate type 0. A person with alleles for blood types A and O marries someone with alleles for blood types Band O....
6. The allele for curly hair is codominant to the allele for straight hair, the heterozygote...
6. The allele for curly hair is codominant to the allele for straight hair, the heterozygote has wavy hair. if two people with wavy hair marry, what hair types would you expect among their offspring 7. Two children in a family have blood type. The mother has type B, and the father has type A a. What are the genotypes of all of the individuals? b. What is the probability that their next child will have blood type O? 8....
8. Dihybrid Genetics: In humans, Brown hair (R) is dominant while red hair (r) is recessive....
8. Dihybrid Genetics: In humans, Brown hair (R) is dominant while red hair (r) is recessive. Freckles (6) is dominant while no freckles (f) is recessive. % Harry Potter is homozygous dominant for freckles and heterozygous for red hair. What is his genotype? What is his phenotype? What gametes could he produce? Ginny Weasley is heterozygous for freckles and has red hair. What is her genotype? What is her phenotype? What gametes could she produce? What is the chance that...
GENETICS PROBLEMS 1. The gene for widow's peak (W) is dominant to the gene for straight hairline...
GENETICS PROBLEMS 1. The gene for widow's peak (W) is dominant to the gene for straight hairline (w). A male homozygote with widow's peak marries a female homozygote with straight hairline, what are the possible genotypic and phenotypic ratios of the F1 and F2 generations that may result from the union? Phenotype of Parents ………………………… x ………………………… Genotype of Parents ………………………… x ………………………… Genes in gametes ………………………… x ………………………… Genotype of F1 Generation ………………………… Phenotype of F1 Generation ………………………… Genes in F1 gametes ………………………… or ………………………… (Punnett Square)...
Hair texture in humans is incompletely dominant. Curly hair (C) plus straight hair (c) gives you...
Hair texture in humans is incompletely dominant. Curly hair (C) plus straight hair (c) gives you wavy hair. Also, having 2 eyebrows is dominant over one eyebrow. If two individuals are heterozygous for both traits, what is the probability of each phenotype in their future offspring?
5. In humans, earlobes that are suspended are dominant over those that are attached. If a...
5. In humans, earlobes that are suspended are dominant over those that are attached. If a mother has suspended earlobes (but her mother did not) and the father has attached earlobes, what are the chances that their first child will have attached earlobes? What about the fourth child? 6. A brown-eyed man whose mother was blue-eyed married a brown-eyed woman whose father had blue eyes. Assume brown to be dominant over blue. What is the probability that the couple will...
A) Achondroplasia is a type of dwarfism. Knowing that a couple where you both show dwarfism...
A) Achondroplasia is a type of dwarfism. Knowing that a couple where you both show dwarfism they can have normal children and achondroplasic children, and that a Normal couple cannot have achondroplastic children. Explain how this is inherited disease and the percentage of offspring that would be affected. B) Galactosemia is a human disease that is inherited from Mendelian simple, like a monogenic recessive character. A woman whose father had Galactosemia is paired with a man whose grandfather was galactosemic....
answer all questions to get a thumbs up 4. A woman has a Widow's peak (dominant),...
answer all questions to get a thumbs up
4. A woman has a Widow's peak (dominant), but she does not know her genotype. She marries a man who has a straight hairline and they have 13 children. Nine have widow's peaks and four have straight hairlines a. What are the genotypes of the parents? b. What are the genotypes of the children? C. Explain how you arrived at your answers. G host 5. In humans, Phenylketonuria (PKU) and Lactose intolerance...
2. A widow's peak (W) is dominant to a straight hairline (w), and unattached earlobes (E) is dominant to attached earlobes (e). Two parents, each with the genotype WwEe, have kids. a. What proportion of their offspring will have a widow's peak and unattached earlobes? b. What proportion will have unattached earlobes but have either a widow's peak or a straight hairline? 3. A woman with normal color vision, whose mother was colorblind, has children with a man with normal...
Multiple Allele Problems (Characteristics That Have More Than Two Possible Forms of the Same Geno) 15. In humans, there are three alleles for blood type: A, B, and O. The allele for blood type A and the allele for blood type B show incomplete dominance. A person with both alleles has blood type AB. Both A and B dominate type 0. A person with alleles for blood types A and O marries someone with alleles for blood types Band O....
6. The allele for curly hair is codominant to the allele for straight hair, the heterozygote has wavy hair. if two people with wavy hair marry, what hair types would you expect among their offspring 7. Two children in a family have blood type. The mother has type B, and the father has type A a. What are the genotypes of all of the individuals? b. What is the probability that their next child will have blood type O? 8....
8. Dihybrid Genetics: In humans, Brown hair (R) is dominant while red hair (r) is recessive. Freckles (6) is dominant while no freckles (f) is recessive. % Harry Potter is homozygous dominant for freckles and heterozygous for red hair. What is his genotype? What is his phenotype? What gametes could he produce? Ginny Weasley is heterozygous for freckles and has red hair. What is her genotype? What is her phenotype? What gametes could she produce? What is the chance that...
5. In humans, earlobes that are suspended are dominant over those that are attached. If a mother has suspended earlobes (but her mother did not) and the father has attached earlobes, what are the chances that their first child will have attached earlobes? What about the fourth child? 6. A brown-eyed man whose mother was blue-eyed married a brown-eyed woman whose father had blue eyes. Assume brown to be dominant over blue. What is the probability that the couple will...
answer all questions to get a thumbs up
4. A woman has a Widow's peak (dominant), but she does not know her genotype. She marries a man who has a straight hairline and they have 13 children. Nine have widow's peaks and four have straight hairlines a. What are the genotypes of the parents? b. What are the genotypes of the children? C. Explain how you arrived at your answers. G host 5. In humans, Phenylketonuria (PKU) and Lactose intolerance...
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