Color-blindness is a sex-linked trait.A boy, whose parents and grandparents had normal vision, is color-blind.What are the genotypes for his mother and his maternal grandparents? Show all work

Name: Color-blindness is a sex-linked trait.A boy, whose parents and grandpa
Uploaded: 2024-03-20T06:42:55.000Z
Channel: Bartleby
Description: Color-blindness is a sex-linked trait.A boy, whose parents and grandparents had normal vision, is color-blind.What are the genotypes for his mother and his maternal grandparents? Show all work

Color blindness is a sex-linked trait which implies that the trait is inherited on X-chromosomes.

Answered: Color-blindness is a sex-linked trait.…

Science

Biology

Color-blindness is a sex-linked trait. A boy, whose parents and grandparents had normal vision, is color-blind

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter18: Genetics Of Behavior

Section: Chapter Questions

Problem 14QP: A pedigree analysis was performed on the family of a man with schizophrenia. Based on the known...

See similar textbooks

Related questions

Q: Let’s look at hair texture. Some people have curly hair, some have straight hair and some express a…

A: Incomplete dominance is the inheritance condition where none of the alleles for a specific trait…

Q: A woman with fair skin, blond hair, and blue eyes gives birth to fraternal twins; the father has…

A: The answer is here

Q: Albinism is a recessive trait. Two individuals who both have normal pigmentation have one child out…

Q: At least two pairs of genes control eye color. Both pairs influence the production of the pigment,…

A: A gene is a sequence of DNA which codes for a functional molecule(RNA/DNA). Diploid organisms have…

Q: A woman homozygous dominant for albinism marries a man who is homozygous recessive for albinism.…

A: Albinism is a disorder common in several organisms that occurs as the mutation of TYR gene. TYR gene…

Q: In the inheritance of sex-linked eye colour in Drosophila melanogaster (fruit fly), what are the…

A: Sex linkage describes the sex-specific patterns of inheritance and presentation when a gene mutation…

Q: Red-green color blindness is an X-linked recessive trait in humans. Polydactyly (extra fingers and…

A: Color blindness, also known as color vision deficiency, is a genetic condition that affects a…

Q: Joe is color blind. Both his mother and his father have normal vision, but his mother’s father…

A: The transfer of genetic data from parents to its offspring is known as inheritance. Genetic diseases…

Q: Suppose a woman has four sons, and two are colorblind but have normal blood clotting and two have…

A: The normal female sex chromosome is denoted by X. The chromosome with color blind allele is denoted…

Q: The trait of having short eyelashes is recessive in humans. A male with short eyelashes has two…

A: Mendel's Law of dominance states that a gene has multiple phenotypes or traits, one of which is…

Q: If a woman homozygous for color blindness has children with a man having normal vision, what would…

A: Color blindness is a condition in which people are unable to see colours normally. Color deficiency…

Q: Joe is color blind. Both his mother and his father have normal vision, but his mother’s father…

A: Introduction: To study the inheritance of genes or characters in the humans, pedigree analysis is…

Concept explainers

Mitochondrial Mutations

A mitochondrion is a cellular organelle that serves as the site for cellular respiration and energy production (ATP or Adenosine Triphosphate). It is a double-membrane-bound organelle and is only present in eukaryotic cells.

Topic Video

Question

100%

Color-blindness is a sex-linked trait.

1. A boy, whose parents and grandparents had normal vision, is color-blind.
2. What are the genotypes for his mother and his maternal grandparents? Show all work

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps with 1 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.

Similar questions

At least two pairs of genes control eye color. Both pairs influence the production of the pigment, melanin, but act independently. One pair of alleles is B (Brown color; dominant) and b (blue color); the other pair is A (pigment production; dominant) and a (no pigment production; albino). The gene pair aais epistatic to (masks) B and b and produces the nonpigmented eyes of the albino. What is the typeof gene interaction that exists between the two gene pairs? Give the genotypes and phenotypes of the possible offspring of the mating bbAa x Bbaa andi ndicate the parental phenotypes. (any method)
In humans color vision is X-linked, the gene for color vision is located on the X chromosome but is absent on the Y chromosome. Normal color vision (XN) is dominant over colorblindness (Xn). Suppose a colorblind man fathers the children of a woman with genotype XNXN. What is the genotype of the father? What proportion of daughters will be colorblind? What proportion of the sons will be colorblind?
A young boy is color blind. His one brother and five sisters are not. The boy has three maternal uncles and four maternal aunts. None of his uncles’ children or grandchildren is colorblind. One of the maternal aunts married a colorblind man, and half of her children, both male and female, are colorblind. The other aunts married man who have normal color vision. All their daughters have normal vision, but half of their sons are color blind. a) is either of the boy’s parents colorblind? b) which of the boy’s four grandparents transmitted the gene for colorblindness?
Colorblindness is a sex-linked traits in humans. If a normal-visioned mother and a colorblind father have 5 female offspring and 6 male offspring that are all NOT colorblind, what is likely the mother’s genotype? Why?
In humans, being right handed (R) is dominant over being left handed (r), and normal vision (X+) is dominant over color blindness (Xc). Color blindness is a X-linked (a.k.a sex linked) trait. Two right-handed parents with normal vision have a son who is color blind and left handed. What are the genotypes of the parents for right-handedness and color blindness?
Color-blindness (c) is a sex-linked recessive trait, while normal color vision (C) is dominant: If two normal-visioned parents have a color-blind son, what are the parent's genotypes? ~What are the chances that their children will be color-blind?
Red-green color blindness is inherited as an X-linked recessive (Xc). If a color-blind man marries a woman who is heterozygous for normal vision, what would be the expected phenotypes of their children with reference to this character? In your answer, specify in your phenotype descriptions the gender of the children. (For example, don’t just say 75% of the children would be colorblind – you would instead say 100 % of the daughters would be colorblind and 50% of the sons would be colorblind. Note that this is not a correct answer; it is just to give you an idea of how to explain the correct phenotypes of the cross.)___
A woman has a rare abnormality of the eyelids called ptosis, which prevents her from opening her eyes completely. This condition is caused by a dominant allele, The woman’s father had ptosis, but her mother had normal eyelids. Her father’s mother had normal eyelids. What are the genotypes of the woman, her father, and her mother? What proportion of the woman’s children will have ptosis if she marries a man with normal eyelids?
Albinism causes the skin, hair, or eyes to have little or no color. It is also associated with vision problems. Albinism results from an allele a that is recessive to the allele for normal melanin production. Maya has normal skin color, but her sister has albinism. Maya’s mother has albinism, and her father has normal skin color. a)What are the genotypes of Maya, her sister, her mother, and her father. b)If Maya’s parents have another child, what is the probability that this child will have albinism? Show the Punnett square you use to help in solving. c)If Maya marries a man with albinism, what is the probability that their first child will have albinism? Show the Punnett square you use to help in solving.
The most common form of colorblindness is a recessive, sex-linked hereditary con dition caused by a defect on the X chromosome. Females are XX, while males are XY. Individuals inherit one chromosome from each parent, with equal probability; for example, an individual has a 50% chance of inheriting their father's X chromosome, and a 50% chance of inheriting their father's Y chromosome. If a male has an X chromosome with the defect, he is colorblind. However, a female with only one defective X chromo some will not be colorblind. Thus, colorblindness is more common in males than females; 7% of males are colorblind but only 0.5% of females are colorblind. (a) Assume that the X chromosome with the wild-type allele is X+ and the one with the disease allele is X. What is the expected frequency of each possible female genotype: X+X+, X+X¯, and X-X-? What is the expected frequency of each possible male genotype: X+ Y and X-Y? (b) Suppose that two parents are not colorblind. What is the…
Skin color in humans is determined by polygenic inheritance, which means the more dominant alleles there are, the darker the skin color will be. A medium-toned skinned woman (AaBb) has a child with another medium-toned skinned man (AaBb). What is the probability of them having a very dark-toned skinned child? (Hint: the genotype is homozygous dominant)
In human beings, the gene for red‑green colorblindness (r) is sex‑linked and recessive to its allele for normal vision (R), while the gene for freckles (F) is autosomal and dominant over its allele for nonfreckled (f). A nonfreckled, normal‑visioned woman whose father was freckled and colorblind, marries a freckled, colorblind man whose mother was nonfreckled. What is the genotype of the woman's father? What is the probability that the couple's first child will be a non-freckled, normal visioned girl? What is the probability that the first two children born to the couple will be freckled and colorblind girls?