A woman with brown eyes has two brothers, marries a man with brown eyes. Their son marries a woman with blue eyes, they have a daughter with blue eyes. All boys, aunt and uncles have brown eyes as well as their grandparents. However, his mother the little girls grandmother has an uncle with blue eyes. Trace the family history of eye color and determine how the little girls could have blue eyes?

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

A: Genes regulate genetic traits.

Q: Both the husband and wife have normal vision. The wife gives birthto a color-blind daughter. Is it…

A: DNA ( deoxyribonucleic acid) is the genetic material that the organism inherits from the parental…

Q: If both parents show a recessive trait then the offspring (children) will show what?…

A: A trait is defined as a particular characteristic of an individual or organism. Traits can be…

Q: Heather was surprised to discover that she suffered from red-green colorblindness. She told her…

A: Color blindness is the decreased ability to see the color or differences in color. It can impair the…

Q: trait such as having a crooked thumb is produced by a

A: crooked thumb or hitchhiker thumb is a condition in which the thumb is hypermobile means it bends…

Q: The reason why autosomal recessive traits appear within a family lineage is due to having…

A: Recessive trait.  The trait which appears only when the both allele of a gene have recessive…

Q: What is the gene that goes with a trait called?

A: A gene is the basic physical unit and functional unit of heredity. Theses are made up of DNA. Some…

Q: Two brown-eyed parents have a child with blue eyes. Briefly explain how this could be possible.

A: Genes are the basic structural and functional units of heredity. They are composed of…

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: A man has a straight hairline. Is it necessary for both his parents to also have straight hairlines…

A: The widow peak is a dominant trait over straight hair line.  Let W encodes Widow peak. And W allele…

Q: What is required in the genotype of an individual to show a recessive trait?

A: Genotype  It is defined as the reference to the alleles (variants of the gene) an individual carries…

Q: The trait of the ear lobe shape is recessive. This statement is

A: Ear lobe size and appearance are also inherited characteristics.

Q: Two normal visioned parents have a color-blind son. What are the genotypes of the parents?

A: Color blindness is a genetic disorder in which a person is not able to see differences in color. The…

Q: If two parents have a dominate trait, can they have a child that has a recessive trait?

A: If two parents have a dominate trait, can they have a child that has a recessive trait?  Ans ) Yes…

Q: If hair color were determined by a single gene, what would be an example of the gene’s alleles?

A: An allele is an alternative form of a gene. It is always represented in a pair for a specific trait.…

Q: Which is an example of a genotype: brown hair OR brown hair allele?

A: The genes are responsible for the specific characteristics of an organisms. The gene products…

Q: Why are men more likely than women to be color blind? Explain.

A: Genetics is a piece of science stressed over the examination of genes, genetic assortment, and…

Q: A man has six fingers on each hand and six toes on each foot. His wife and their daughter have the…

A: Usually, our phenotypes are controlled by the genes, sometime only one gene can determine the…

Q: siblings who share both parents might look different.

A: Chromosomal crossover : It is defined as the exchange of genetic material between two homologous…

Q: A man and his wife both have normal vision, but their daughter has red-green color-blindness. The…

A: Sex-linked dominant: In this type the gene or condition is dominant type which means expressed in…

Q: In a father and son are both defective in red-green color vision,is it likely that the son inherited…

A: Heredity is a biological process whereby a certain genes are passed by parent onto their offspring…

Q: If grandmother and grandfather are dark skinned what is their genotype.

A: Introduction: When a single trait is controlled by more than one gene is referred to as Polygenic…

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

A: Color blindness is an incurable disease in which the patient gradually loses the ability to…

Q: “If two sets of identical twins get married and each couple has a child, could the resulting…

A: A "twin" is one amongst a pair of twins. One set of twins refer to 2 those who were born along. many…

Q: A family of mice living in a small cage had babies with white fur coloring and brown fur coloring.…

A: Grandparents' genes can affect how their grandchildren look.

Q: Explain the chances that a color-blind woman who is married to a man with normal vision will produce…

A: Let the genotype of color blind woman is XcXc and genotype of normal vision man is XY. We can…

Q: If two parents have a recessive trait, can they have a child that has a dominant trait?

A: Introduction  Even if only one copy of the dominant trait exists, dominant traits are always…

Q: What is the genotype of a person without freckles?

A: Freckle is a disease caused by the excess production of melanin (skin pigment). On the exposure of…

Q: An inherited trait that is expressed even when inherited from only one parent

A: DNA is the genetic material of the the organisms like plants and animals. DNA is a double helical…

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: Mendel used the terms blank to describe a factor controlling a trait that always shows up in…

A: Mendel is the father of genetics.

Q: Each member of a family of 5 has eye color that is a different shade of brown.  The father's eyes…

A: The color of your eyes depends on how much of the pigment melanin you have in your iris—the colored…

Q: If a person has albinism and dark skinned parents what is their genotype

A: Albinism results from the mutation in several genes. It follows the autosomal recessive inheritance…

Q: Choose a pattern of inheritance (autosomal recessive, X-linked dominant, etc.) and identify a…

A: A genetic disorder is a condition characterized by alterations in the DNA which are passed to the…

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

A: Albinism is an autosomal genetic disorder. Persons with albinism have less or no melanin production.…

Q: A brown-eyed man with "hitchhiker's thumb" marries a brown-eyed woman with a straight thumb. If…

A: Hitchhiker's thumb is a genetic condition in which the thumb of the individual is hypermobile and is…

Q: A homozygous individual has what allele(s) of a particular gene? Select one: a. 2 dominant or 2…

A: An allele is described as an alternative form or version of a gene. An individual inherits two…

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: The trait of the ear lobe shape is recessive. This statement is..

A: Free earlobes are the ones that curve up from the bottom of the earlobe to the point at which the…

Q: If both parents are carriers of an autosomal recessive trait, what can you say about their children?…

A: Mendel coined the word "trait" to characterise the traits exhibited by the genes on chromosomes when…

Q: The trait of possessing dimples is a trait. recessive dominant

A: Dimples is a dominant trait.

Q: If a color-blind woman married a man whohad normal color vision, what would be theprobable…

A: Color blindness is a genetic disorder in which the photoreceptors of the retina cannot process…

Q: Freckles is determined by a single gene and having freckles is dominant over not having freckles. If…

A: Freckles is dominant over not having freckles implies that this is Dominant trait . Law of…

Q: If one parent has eyes with a blue recessive allele and the other parent has eyes with a brown…

A: In inheritance, a gene has two alternative form of an allele. These alleles are dominant and…

Q: d. Homozygote and heterozygote of an eye color e. Monohybrid and Dihybrid f. Trihybrid and…

A: Answer D: - Homozygote is the one which has same allele pair in the gene Heterozyote is the one…

Q: Is A widow's peak hairline is dominant (W) to a straight hairline (w). Karen and her brother both…

A: given that W , windows peak is dominant over w , straight hairline .  and parents are windows peak…

Q: Would it be possible for a woman with an uncleft chinto have children with cleft chins? Use a…

A: Living organisms are classified into haploid, diploid, triploid, and so on based on the sets of…

Q: In dominant–recessive inheritance, the one allele that affects the child’s characteristics is called…

A: Alleles are variant forms of a gene, there are two alleles of a single gene but due to mutations,…

Q: Explain how a Pedigree can be used to predict the inheritance patterns of traits through a family.…

A: A pedigree is a chart that shows the occurrence and appearance or phenotypes of a particular gene in…

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.