Joe is color blind. Both his mother and his father have normal vision, but his mother’s father (Joe’s maternal grandfather) is color blind. All Joe’s other grandparents have normal color vision. Joe has three sisters— Patty, Betsy, and Lora—all with normal color vision. Joe’s oldest sister, Patty, is married to a man with normal color vision; they have two children, a 9-year-old color-blind boy and a 4-year-old girl with normal color vision. Q. If Joe marries a woman who is a carrier of the color-blind allele, what is the probability that their first child will be a color-blind boy?

Q: A woman without red-green colorblindness and with a normal chin, whose mother was colorblind,…

A: Genetic inheritance patterns come in two flavors: autosomal dominant and sex-linked recessive. The…

Q: The presence of freckles (F) is dominant to no freckles (f). Jake and his mom have freckles, but his…

A: Only the Dominant Allele (F) is expressed in a heterozygous genotype.  Given:  Dominant (F)…

Q: Dick has red green color blindness.  Debi does not have color blindness and is homozygous for this…

A: The functional unit of inheritance is called a gene. Genes are the sequence of nucleotides that are…

Q: Colorblindness is a sex-linked trait. A color- blind woman marries a man with normal color vision.…

A: Color blindness is a recessive x linked disorder, i.e., it is caused by mutation or defect in the x…

Q: Which of the following genetic disorders is described by the following: Recessive sex-linked…

A: Only the X chromosome contains the 'gene' that induces (inherited, red and green forms of) colour…

Q: If there is no treatment for albinism, what is the status of research on this genetic disorder?…

A: Introduction :- Albinism is an uncommon set of hereditary illnesses characterised by a lack of…

Q: This case explores how skin color is inherited in humans, presented in the story of Catherine and…

A: Introduction  Polygenic inheritance is the inheritance of a trait that is controlled by multiple…

Q: John has unattached earlobes (dominant) like his father, but his mother has attached earlobes…

A: Let’s denoted the allele for unattached earlobes as A and allele for attached earlobes as aThe…

Q: Mabel has normal color vision and her father was color blind. Mable marries Reginald, who has normal…

A: Color vision defect is a genetic disorder that affects an individual’s perception of color. The most…

Q: 1. In humans, hair form is an autosomaltrait showing incomplete dominance. Hair can be straight,…

A: In incomplete dominance blending of traits occur as dominant allele does not completely mask the…

Q: A color-blind female is expecting with a color seeing male – what is the probability of a male child…

A: Color blindness is a genetic disease that is inherited from parents to their offspring. Inheritance…

Q: man, whose mother has normal fingers, is brachydactylous (very short fingers, rare dominant trait),…

A: The dominant trait means that that mutation occurs in one of the allele of a gene and is expressed…

Q: Linda has a long palmar muscle.  Her parents, Rob and Grogg, do not have a long palmar muscle.…

A: Genetics is the study of genes and their effect on the body. Genes are the heritable characteristics…

Q: How can wolf hirschhorn syndrome progress or change?

A: Many cases of Wolf-Hirschhorn syndrome (WHS) (about 50-60%) are not inherited from a parent and are…

Q: Alex (from part A) grows up and marries Molly - they end up having four children. Two of their…

A: Color-blindness is a X-linked recessive recessive inheritance. So, this trait will be transferred…

Q: possible

A: The colour blindness is a  X linked recessive disease . This is carried by the x chromosome linked…

Q: Having dimples (D) is dominant over not having dimples (d). A dimpled woman (whose father had no…

A: Answer :  Given that, A dimpled woman marries a man whose mother had no dimples, whose father had no…

Q: Hair color is due to the presence of melanin. There are two types of melanin produced by…

A: Introduction Melanocytes are skin and eye cells that create and store the pigment melanin.…

Q: Explain why skin color genetics is so much more complex than that of Mendelian traits.

A: Mendel studied the unit of inheritance in pea plants. Mendel perform some cross on garden pea plants…

Q: What is the type of genetic inheritance of color blindness? Is color blindness more frequent in men…

A: Colour blindness is a condition in which a person is incapable to see colours normally. Colour…

Q: Jane (mother): Tt XcXc IBi -Taster, Color-blind female, Blood type B John (father): tt XcY IAIB-…

A: Colour blindness Colour blindness is a genetic disease. In this disease the person is unable to see…

Q: Having dimples (D) is dominant over not having dimples (d). A dimpled woman (whose father had no…

A: According to guidelines we have to answer the first 3 sub-parts only. so please kingly post the…

Q: 3) if a normal sighted male has children with a carrier woman a) what proportion of their daughters…

A: Q.Ans:- Explanation:- Color blind move to an offspring in an X-linked recessive manner. Let 'A'…

Q: 5. If a protein called phenylalanine builds up in the body, the person has a disease called…

A: INTRODUCTION Phenylketonuria This defect is caused due to the damage in the gene which produce…

Q: If Mrs. Spud has a wide nose (XN) and Mr. Spud has a long nose (Xn): a. Why would it be impossible…

A: Given that:  Mrs. Soud has wide nose (XN)  Mr. Spud has a long nose (Xn)  Let mother genome be 46…

Q: Looking at hairline (widow's peak = H) and ear shape (ear lobes = E)... If a man who is HhEe has…

A: INTRODUCTION  Genetics is the branch of biology that deals with studies of genes, mutation,…

Q: Aaron and Bethany, the parents of Larry, Sarah, Danny, and Brittany, are normal for color blindness.…

A: Color blindness is a rare X-linked recessive disease. An X-linked recessive disease has the…

Q: Aaron, a 3-month-old boy, was just diagnosed with a rare genetic immunodeficiency condition. Aaron's…

A: Case summary The patient is a 3-month-old boy named Aaron who has been diagnosed with a rare…

Q: Miguel wants to know if his musical talent comes from his great Dash great grandfather Hector. Win…

A: Mendel's inheritance biology states that there are two forms of a gene. Each form is responsible for…

Q: Tony has anosmia, a disorder that prevents him from being able to smell. This disorder is an…

A: Unfortunately, I cannot directly perform actions like taking photos or uploading images. However, I…

Q: Please explain how genetic heterogeneity can result in a child with normal hearing from parents who…

A: Following is an explanation of how two deaf parents can have a child with normal hearing as a result…

Q: Why is it really uncommon to have brown eyes with red hair?

A: It is really uncommon to have brown eyes with red hair.Brown eye colour is one of the most common…

Q: Albinism is inherited through a recessive allele (a). Juan has normal skin color. His Mom and Dad…

A: Genotype means the alleles constituting the genetic composition and responsible for the expressing…

Q: Looking at hairline (widow's peak = H) and ear shape (ear lobes = E)... If a man who is HhEe has…

A: Widows peak  is a dominant trait that is controlled by a dominant allele H. Therefore it will be…

Q: a) A man with red-green colour blindness is married to a girl with normal colour vision. What is the…

A: Genetics is the study of the functioning and main codes of variation and heredity. Inheritance is…

Q: Red-green color blindness means that a person cannot distinguish shades of red and green (usually…

A: Introduction : Colour blindness is an X - linked recessive disease. So if one X chromosome is…

Q: Why is inheritance of eye color more complex than just having either blue or brown eyes?

A: Eye colour is a genetically inherited trait that is influenced by more than one gene.  There is…

Q: Doug just found out he has Parkinson's Disease. This wasn’t a huge surprise since Doug’s father also…

A: Introduction The neurodegenerative diseases include Parkinson’s, Alzheimer’s, and Huntington’s…

Q: Can two polydactylic people have a child without polydactyly? Please explain.

A: Polydactyly is a condition in which a baby is born with an additional finger or toe on each hand or…

Inheritance and Mendelian Genetics

Inheritance means the passing of traits to offspring from parents. These traits could be passed either through asexual reproduction or sexual reproduction. The offspring receives the genetic material from the parents. Mendelian inheritance is a certain biological inheritance that follows the rules and principles laid down by Gregor Mendel in 1865. The initial hypothesis was considered wrong, but other inheritance theories modified the concept of inheritance and thus genetics.