A man and his wife are both heterozygous for brown eyes. They have six children all of whom ve blue eyes. A) How is this explained? B) What are the chances that their next child will have brown eyes? C) What are the chances that their next child will have blue eyes?

Q: Two normal parents have a child with cystic fibrosis. Would this be an autosomal dominant or…

A: Cystic fibrosis refers to the disorder in which the body produces sticky and thick mucus causes…

Q: A homozygous dominant man with Marfan Syndrome, an autosomal dominant disorder, has children with an…

A: Marfan syndrome affects the essential parts of the human body, including the bone, eyes, nervous…

Q: Do the symbols A and a have anything to do with dominance and recessiveness?

A: The genotype for a particular trait is usually represented by a letter, the capital letter (first…

Q: Could a man with an AB blood type be the father of an O child ?Could a man with an O blood type be…

A: According to the question, we have to explain that could a  man with an AB blood type be the father…

Q: What is a varicosity

A: Varicosity is a dilated vein that mostly develops in legs.  The role of our veins is  to carry blood…

Q: If the proband (III-2) marries a carrier woman, what is the probability that they will have an…

A: Family Analysis Each of the ends in regards to quality activity (predominant/passive; codominant) we…

Q: Based on the information in Figure 2, what is the genotype of the father? * BB Bb bb

A: Genotype is defined as the genetic constituents of an individual.

Q: What is epistasis? What is the difference between dominant epistasis and recessive epistasis?

A: Genetics entails a phenomena, epistasis wherein the impact of a gene mutation depends on the absence…

Q: A woman is heterozygous for the gene that causes cystic fibrosis, an autosomal recessive disorder.…

A: A series of event that occurs in a cell to make it ready for the division is the cell cycle.  There…

Q: A color-blind man marries a woman with normal vision whose father was color-blind.  Remember that…

A: The alleles are generally of dominant and recessive type and some other forms like codominant and…

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

A: It is otherwise called hyperdactyly, is an irregularity in people and creatures bringing about…

Q: What is complete dominance?

A: Complete dominance: usually in maximum cases the diploid organisms carry 2 alleles of a gene. When…

Q: According to Figure 2, what is the probability that the next child of couple II.4 and II.5 would…

A: Pedigree is defined as a diagram that will show the lineage of an organism and all the direct and…

Q: In a disputed parentage case, the child is blood type O, while the mother is blood type A. What…

A: There are 4 primary blood groups (kinds of blood) – A, B, AB and O. Your blood group is controlled…

Q: what is Nullisomy?

A: Each cell in the body contains the 23 pairs of chromosome or total of 46 chromosome, half of which…

Q: Two parents who do not have color blindness have a daughter who has only one X chromosome and is…

A: The event of nondisjunction occurs when the chromosomes fail to separate during the process of…

Q: If a woman who is a carrier for Tay-Sachs has children with a man who is not a Tay-Sachs carrier,…

A: Tay-Sachs disease is an autosomal recessive disorder. They are passed from the parents to the…

Q: Why can a person carrying a translocation be normal except for theinability to have children?

A: Translocation is a hereditary change were a piece of one chromosome servers and connects to another…

Q: Why doesn’t the father (II-1) have the disease breast cancer? What is the formal name for an…

A: 1) The pattern of inheritance of the pedigree is autosomal recessive. The father (I-1) is…

Q: What is the probability that a color-blind woman who marries a man with normal vision will have a…

A: Color blindness is a condition which is passed on genetically. In this condition it is difficult for…

Q: .A man who is colorblind marries a woman who has normal color vision and is not a carrier of color…

A: Answer. A pedigree is a family tree or chart made of symbols and lines that represent a person's…

Q: If the dad is homozygous dominant for thick eyebrows, what is the percent chance of the baby having…

A: Mendel, in his monohybrid cross, demonstrated that with the help of Punnett squares, we can…

Q: What is a recessive epistatic gene?

A: Epistasis Epistasis can be defined as the condition where phenotypic expression of one gene is…

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 is the concept of dominance?

A: Dominance is the power and influence over the others. In genetics, it is the process of one allele…

Q: What is pleiotropy?

A: Pleiotropy refers to the expression of multiple traits by a single gene. These expressed traits may…

Q: What is the difference between homozygous recessive and homozygous?

A: The collection of genes in an individual is called genotypes. Each trait is coded by a pair of…

Q: What causes nondisjunction?

A: Chromosome is the package of densely packed chromatin fibres with DNA and histone proteins. In…

Q: What is the difference between extrachromosomal and delayed chromosomal inheritance?

A: Usually the genes are the hereditary units of life. The genes are present in the nucleus and from…

Q: What does homozygous black mean?

A: in animals like cattle, horses, mice etc, their coat/fur coat is determined by what alleles they…

Q: If the proband (III-2) marries a carrier woman, what is the probability that they will have an…

A: The inheritance pattern observed from the given pedigree is an X-linked dominant trait.

Q: If the cow that is heterozygous for citrullinemia is inseminated by bull that is homozygous…

A: Citrullinemia is an example of autosomal recessive disorder. It is a disorder of urea cycle that…

Q: man has a child with a woman who does not carry the dominant disease allele, what is the probability…

A:

Q: What are twins? Genetically, what are the two types of twins that can occur?

A: Introduction In this question we have to define twins and have to discuss about the types of twins,…

Q: If a male is colorblind, what information do you absolutely know about his daughters?

A: A gene is a sequence of nucleotides in genome that codes for a functioning molecule. There is…

Q: Cystic fibrosis is an autosomal recessive disorder that affects 1 in 3 000 newborns with Caucasian…

A: Cystic fibrosis (CF) is an inherited disorder that causes severe damage to the lungs, digestive…

Q: What is double fertilizaton?

A: Angiosperms are flowering plants and also considered as a diverse group of terrestrial plants.

Q: If you cross a female carrier of color blindness with a normal male, what are the chances of having…

A: Genes are the functional unit of inheritance. They are the sequence of nucleotides that are present…

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: How do we know that monozygotic twins are not identical genotypically as adults?

A: An embryo is a stage of human development that is created by the union of eggs and sperm. Organs and…

Q: what is the probability that a couple (both heterozygous for the same recessive mutation) will have…

A: “Homozygous defect” takes place If the type of “deleterious mutation” is the same in both copies of…

Q: Mary and Ron don't have albinism. However, is it possible for them to have a child with albinism?…

A: Since we only answer 1 question in case of multiple question, we’ll answer the first question as the…

Q: The percentage chance that the mother described above will give birth to a daughter with mid-digital…

A: The alleles are the alternative forms of a gene that are located on the same locus of a homologous…

Q: Can a human male be a carrier of red-green color blindness?

A: The most prevalent types of color blindness are genetic, meaning they are handed down from one…

Q: What do you mean by Uniparental?

A: The genome represents the genetic material in an organism having a set of chromosomes that is…

Q: What is recessive epistasis?

A: In epistasis, the collaboration between qualities is hostile, to such an extent that one quality…

Q: Which of the seven chromosomal pairs that Mendel's genes were located?

A: The seven traits which Mendel used to study are Height Pod Shape Seed Shape Pea Colour Flower…