Homework Answers
Answer: 75%
Explanation:
In an autosomal dominant inheritance, only one copy of the dominant allele is required to express the phenotype of the dominant allele.
Here, AA is homozygous dominant, Aa is heterozygous dominant and aa is homozygous recessive. In the genotypes of the offspring given in punnet square, only 'aa' will exhibit the phenotype of the recessive allele 'a' and all the other offspring has at least one dominant allele, hence, expresses the dominant phenotype (widow's peak). Therefore 3 out of four offspring express widow's peak hairline, so the probability of the child having widow's peak is 75%.
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Based on the Punnett square, what is the probability a child will have a widow's peak,...
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)...
please explain and show punnett square solution A child is born to a couple, one of...
please explain and show punnett square solution
A child is born to a couple, one of whom is heterozygous for an autosomal dominant disease. The other parent is homozygous normal. What would be the child's chances of having the disease? (Hint: use a Punnett square to figure this out). 0% 25% C. 50% 75% A child is born to a couple, one of whom is heterozygous for an autosomal recessive disease The other parent is homozygous normal. What would be...
are to determine the probability of inheriting a widow's In this activity you will ea Penne...
are to determine the probability of inheriting a widow's In this activity you will ea Penne peak or a straight hairline Procedure Read the instructions for using a Punnet square (Figure 11.1). 1. Discuss the instructions with your lab partners, 2. Fill in the blank spaces and solve problem #1. Using a Punnett Square Gametes • Place possible gametes along two opposite sides of the square Record genotypes of potential offspring in appropriate cells of the square Gametes P PP...
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...
Human Mendelian Traits Mendelian Traits are those traits which follow Mendel's rules of only 2 possible...
Human Mendelian Traits Mendelian Traits are those traits which follow Mendel's rules of only 2 possible versions of a gene(1 dominant, 1 recessive). There are only a few examples of this in humans. 1. Circle the heterozygous dominant genotypes: AA Aa aa YyYY W Re RR 2. Circle the homozygous recessive genotypes: AA Aa aa YyYY V ir Rr RR 3. Use the chart below to determine your phenotype (observable characteristic) and possible genotype(s) (a pair or pairs of alleles)....
5. Choose another trait and genotype, and make another Punnett square. ratio of genotypes: ratio of...
5. Choose another trait and genotype, and make another Punnett square. ratio of genotypes: ratio of phenotypes: ояти Activity #3 on Albinism: DOOMED CORN. DOOMED CORN. Albinism occurs in many species of animals, and in plants. For the animals, the condition may be an inconvenience, but for the plants it can be a death sentence. Consider that the green pigment, chlorophyll, is necessary for plants to produce food by photosynthesis. Without chlorophyll, the plants soon starve to death, so a...
can someone please help me with this ? Practice Using a Punnett Square. Punnett Squares are...
can someone please help me with this ?
Practice Using a Punnett Square. Punnett Squares are tools to identify outcomes known genotypes. They can be used to help infer probabilities of genotypes and from a particular cross. of possible crosses between individuals of phenotypes amongst offspring lele forms "A" and "a". A woman is heterozygous, so she can produce eggs with Consider a gene with all 9. and Write them across the top of the Punnett Square below the following...
42. The Punnett Square should be used in determining likelihood of parents transmitting an autosomal recessive...
42. The Punnett Square should be used in determining likelihood of parents transmitting an autosomal recessive or dominant trait to their child A. True В. False
Red-green color blindness is due to an X-linked recessive allele in humans. A widow's peak (a...
Red-green color blindness is due to an X-linked recessive allele in humans. A widow's peak (a hairline that comes to a peak in the middle of the forehead) is due to an autosomal dominant allele. Consider the following family history: A man with a widow's peak and normal color vision marries a color-blind woman with a straight hairline. The man's father had a straight hairline, as did both of the woman's parents. Use the family history to make predictions about...
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...
please explain and show punnett square solution
A child is born to a couple, one of whom is heterozygous for an autosomal dominant disease. The other parent is homozygous normal. What would be the child's chances of having the disease? (Hint: use a Punnett square to figure this out). 0% 25% C. 50% 75% A child is born to a couple, one of whom is heterozygous for an autosomal recessive disease The other parent is homozygous normal. What would be...
are to determine the probability of inheriting a widow's In this activity you will ea Penne peak or a straight hairline Procedure Read the instructions for using a Punnet square (Figure 11.1). 1. Discuss the instructions with your lab partners, 2. Fill in the blank spaces and solve problem #1. Using a Punnett Square Gametes • Place possible gametes along two opposite sides of the square Record genotypes of potential offspring in appropriate cells of the square Gametes P PP...
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...
Human Mendelian Traits Mendelian Traits are those traits which follow Mendel's rules of only 2 possible versions of a gene(1 dominant, 1 recessive). There are only a few examples of this in humans. 1. Circle the heterozygous dominant genotypes: AA Aa aa YyYY W Re RR 2. Circle the homozygous recessive genotypes: AA Aa aa YyYY V ir Rr RR 3. Use the chart below to determine your phenotype (observable characteristic) and possible genotype(s) (a pair or pairs of alleles)....
5. Choose another trait and genotype, and make another Punnett square. ratio of genotypes: ratio of phenotypes: ояти Activity #3 on Albinism: DOOMED CORN. DOOMED CORN. Albinism occurs in many species of animals, and in plants. For the animals, the condition may be an inconvenience, but for the plants it can be a death sentence. Consider that the green pigment, chlorophyll, is necessary for plants to produce food by photosynthesis. Without chlorophyll, the plants soon starve to death, so a...
can someone please help me with this ?
Practice Using a Punnett Square. Punnett Squares are tools to identify outcomes known genotypes. They can be used to help infer probabilities of genotypes and from a particular cross. of possible crosses between individuals of phenotypes amongst offspring lele forms "A" and "a". A woman is heterozygous, so she can produce eggs with Consider a gene with all 9. and Write them across the top of the Punnett Square below the following...
42. The Punnett Square should be used in determining likelihood of parents transmitting an autosomal recessive or dominant trait to their child A. True В. False
Red-green color blindness is due to an X-linked recessive allele in humans. A widow's peak (a hairline that comes to a peak in the middle of the forehead) is due to an autosomal dominant allele. Consider the following family history: A man with a widow's peak and normal color vision marries a color-blind woman with a straight hairline. The man's father had a straight hairline, as did both of the woman's parents. Use the family history to make predictions about...
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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