If someone with auburn hair has children with someone with red hair (but whose mother had black hair), what are the genotype and phenotype probabilities for their children?

Q: Grandma Jade is affected with tuberous sclerosis, she grows benign tumors, and the trait is under…

A: A few people inherit the disorder from a parent with TSC, most cases happen as irregular cases…

Q: A man and woman are both heterozygous for an autosomal recessive disease allele. They would like to…

A: Autosomal recessive disease refers to a genetic disorder that occurs when an individual inherits two…

Q: Use a punnett square to calculate the following:   George is the youngest child in a family that…

A: The DNA is the hereditary unit of an organism. The genes are composed of DNA  which is passed on…

Q: Hypothetically speaking, of course, right handedness is dominant to left handedness and brown eyes…

A: A dominant trait is expressed in both homozygous and heterozygous genotypes while a recessive trait…

Q: What will be the possible offspring from a dad who has hemophilia and a mom who is a carrier?…

A: Hemophilia is a generally acquired hereditary disorder that debilitates the body's capacity to make…

Q: If a colorblind father and a non-colorblind carrier (heterozygote) mother have a daughter and a son,…

A: Colourblindness is an X-linked trait. X-linked traits are essential traits that are determined by…

Q: What is the probability that their next child will be affected?

A: Cystic fibrosis is an inherited disease that leads to affecting the glands which results in mucus…

Q: 1 2 II 2 3 4 5 6 7 8 III 1 2 3 4 5 6 7 8 9

A: Huntington's disease is an autosomal dominant disease which means only one allele would suffice to…

Q: Huntington's disease is a late-onset autosomal dominant disorder. What is the chance that a…

A: Hungtington disease is a brain disorder that causes uncontrolled movements, loss of thinking…

Q: What kind of polymorphism is most likely represented?

A: In genetics, polymorphism is said to be when more than one allele occupies the gene locus within a…

Q: Mary and Dai both have freckles (a dominant trait). Their first child, Mariko, does not have…

A: Genetics is the study of genes, heredity, and genetic variation in an organism. Living organisms…

Q: If you have straight hair but all of your family members have wavy and curly hair, what can you…

A: Straight vs curly hair is  an example of incomplete dominance.

Q: How can there be more than one possible genotype for an observed phenotype

A: A genotype is a set of heritable genes in an organism that are transferred from parents to…

Q: Given the situation: both parents are heterozygous for cystic fibrosis, what is the probability of…

A: Cystic fibrosis is an autosomal recessive disease. This means if both the recessive copies of the…

Q: In a cross between an individual with Huntington disease and an unaffected individual, what are the…

A: Huntington disease is a progressive brain disorder that causes uncontrolled movements, emotional…

Q: What is the probability that a couple will have a child (son or daughter) with an autosomal,…

A: Sir Gregor Mendel was a priest and a teacher who did the famous hybridization experiment on garden…

Q: If the frequency of the homozygous dominant genotype is 0.49, what is the frequency of the…

A: The frequency of the homozygous dominant genotype (AA) in a population is reported as 0.49. The…

Q: What must be true about the genotypes of parents who have a child who has a dominant trait?

A:

Q: Duchenne's muscular dystrophy is sex-linked and usually affects only males. Victims of the disease…

A: Duchenne muscular dystrophy is an X-linked recessive disorder and it generally affects males. Males…

Q: There is a couple, the blood type of a male is A+ and the female is o+. What are all the possible…

A: Blood group A contains the alleles IAIA or IAi ,i.e. male will have these alleles Female having O…

Q: If someone has Marfan syndrome, what are their genotypes? If that person has children who do NOT…

A: Marfan syndrome is a systemic connective tissue disorder. It is caused by the mutation of…

Q: Tucker (Joe and Sue's child) married Bonnie, who also has Marfan Syndrome. Together they have three…

A: Introduction  Marfan syndrome is an inherited disorder distinguished notably by skeletal alterations…

Q: When does Mendel’s second law of independent assortment occur? Does it occur during mitosis, meiosis…

A: According to Law of Independent Assortment ,during a dihybrid cross, an assortment of traits (each…

Q: What would be the results in terms of the genotype and phenotype if one parent were heterozygous for…

A: Introduction  Transmission of characters/genes from parents to offspring is referred as Inheritance.…

Q: A phenotype trait that is depending on several genes is said to be:

A: A phenotype describes the observable features of an organism. This defines the overall look and…

Q: If two married individuals had a sibling affected by cystic fibrosis, what are chances that they…

A: Cystic Fibrosis is an autosomal recessive genetic disorder. It is primarily caused by the mutation…

Q: Polydactyly (having more than five digits) results from the presence of a dominant allele. A man has…

A: Polydactyly is the condition of having extra fingers and toes in humans. It is caused by…

Q: type B woman is the daughter of a type O father and type B mother. If she has children with a type O…

A: The four main blood types (groups) are A, B, AB, and O. The genes you inherited from your parents…

Q: What is an individual with a heterozygous genotype?

A: The genotype is a collection of genes and controls the genetic features of an organism.

Q: A man has six digits on each hand and foot (an autosomal dominant trait).  His wife and first…

A: A condition in which an individual has more than 5 digits is known as polydactyly. Polydactyly is an…

Q: at least 1 child with attached earlobes

A: Homozygous individuals mean there is a pairing of the two same types of alleles and both of the…

Q: What would be the probability of having 2 children showing the dominant character and 2 showing the…

A: An allele is a pair of genes which appear at a particular location on a particular chromosome and…

Q: What are the genotypes and phenotypes for Mendel’s true-breeding parent plants?

A: Gregor Mendel was the scientist who worked in the field of genetics. This field is associated with…

Q: For the following cross, what proportion of offspring will have the same genotype as the father?…

A: Genotype is defined as the genetic combination present in an individual. Whereas phenotype is the…

Q: What would be the expected phenotypes and genotypes of the children when a color blind man marries a…

A: Colorblindness is an X-linked recessive trait. It is more common in males than in females because…

Q: Draw a Punnett square for a female who is a heterozygote and a male who is a dominant homozygotes.…

A: Genes are hereditary units in the DNA. These genes can be present in two versions called "dominant"…

Q: Draw a Punnett Square for two heterozygotes; what is the probability of each possible genotype?

A: An organism that is diploid such as a human has 2 sets of chromosomes. Furthermore on these…

Q: humans, the gene for right-handedness is dominant to the gene for left-handedness. A man and a woman…

A: Law of Dominance states that dominant alleles always mask the recessive alleles. The characters that…

Q: If a mother with sickle-cell anemia and a father with the sickle-cell trait havechildren, calculate…

A: Sickle cell anemia is a disease inherited from the parents of a person. The body of a person with…

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.