Below is a simplified chart for polygenic trait of eye colour. The amount of melanin in the iris is what determines the colour of the eye. People with brown eyes have more melanin in their iris than people with blue eyes. The amount of melanin is controlled by how many dominant alleles a person has for eye colour as follows: Number of Dominant Alleles Genotypes Phenotypes 4 AABB Very dark brown eyes 3 AaBB or AABb Brown eyes 2 AaBb, aaBB etc. Light brown or hazel eyes 1 Aabb or aaBb Dark blue eyes 0 aabb Light blue eyes Which of the following parental crosses explains how two brown-eyed parents can produce a blue-eyed child? Select one: a. AaBB AABb b. AaBB AaBb c. Aabb AABB d. AABB AaBb

Q: For some traits, one allele is not completely dominant to another.  Incomplete dominance occurs when…

A: Incomplete dominant traits are those traits in which one allele is not completely dominant to…

Q: Which of the following traits are complete dominance, incomplete dominance, X-linked, or sex-linked?…

A: If a dominant character is expressed in heterozygous condition then that shows complete dominance.…

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: A man is homozygous dominant for fair skin and heterozygous for black-straight hair, his wife has…

A: In humans, the hair color, skin color, hair type, and eye color are not inherited in complex way. As…

Q: What is a dimorphism?     A trait with two distinct forms originating from the interaction of two…

A: In genetics and natural environment we see many organisms having different traits within a…

Q: A trait exhibits 100% concordance in both monozygotic and dizygotic twins. What conclusion can you…

A: Introduction : Monozygotic (MZ) twins are born when a single egg fertilized by a single sperm…

Q: Brown hair color is a dominant trait while red hair is recessive. Assume that a mah, WHO IS…

A: A) Genotype- It is the set of genes that we have inherited from our parents and will pass on these…

Q: Genotype: Is the letters we use to represent the trait on the chromosome (Examples: TT, Tt, tt)…

A: Here, Y = Dominant allele  and  y = recessive allele YY= homozygous dominant yellow  Yy=…

Q: A cross is performed between individuals that are both heterozygous for two traits. What is the…

A: Given information The cross is between two traits thus it is called a dihybrid cross. The…

Q: Which of the following statements describes Mendel’s Law of Segregation? a. The dominant allele is…

A: Inheritance is a process by which chracters   are passed from parent to progeny;  it is a basis of…

Q: Like brown eyes, presence of dimples and cleft chin are dominant traits. Sarah has brown eyes and…

A:

Q: Two parents are both heterozygous for a single-gene recessive genetic trait. This means that their…

A:

Q: Complete the table below by writing the expected phenotypes for the different types of inheritance,…

A: A genetic trait is considered dominant if it is expressed in a person even in its single copy. While…

Q: The comb shape of chickens is an example of an interesting inheritance pattern.  Two genes, each…

A: Phenotypic characteristics of an organism is determined by the expression of specific alleles. the…

Q: Hemophilia is a sex-linked trait. A person with hemophilia is lacking certain proteins that are…

A: a) The genotype of parents :- Male parent-  Xn Y Female parent - XN Xn   b) The probability that a…

Q: Explain multiple Alleles using Human Blood Groups as an example.

A: Each gene, according to Gregor Mendel, should contain only two alleles. Alleles are gene variants…

Q: Draw a pedigree chart for the family described below and use the chart to determine the genotype or…

A: Pedigree is a family chart drown by genetic councillor by the use of some symbols to determine a…

Q: Alleles that are are expressed and mask expression of other alleles are known as with a capital…

A: In organisms that sexually reproduce, each individual organism receives two sets of chromosomes, one…

Q: In cattle, 3 coat colors are identified, red white and roan which is a mixture of the other 2…

A: A genetic trait can be inherited from the parent to the progeny in different ways. It depends on…

Q: if there are three genes that determine freckledness and the more dominant alleles a person has the…

A: Example Rules If there are three genes that determine freckledness and the more dominant…

Q: In man, there is gradation in eye color and resulting to 9 phenotypes. These are (in order of the…

A: Dark brown eyed child and hazel eyed will be there in the progeny. Hazel eye color is most likely to…

Q: Like brown eyes, presence of dimples and cleft chin are dominant traits. Sarah has brown eyes and…

A:

Q: People with  recessive disorders are usually born to normal parents who are both heterozygotes which…

A: The recessive disorder occurs when two mutated genes are inherited from each parent to their child.

Q: The gene for eye pigmentation has __________ alleles. Group of answer choices   A. 1 B. 3 C. 5 D. 2…

A: The genetics of eye colour are complicated, and humans have a wide range of eye colours. These…

Q: If a man has 6 fingers on each hand and 6 toes on each foot and his wife and daughter have the…

A: Polydactyl is a condition when a baby born with an extra finger in their feet or hands. It is an…

Q: For each phenotype, list the genotypes (remember to use the letter of the dominant trait). Straight…

A: Phenotype represents the physical appearance of the organism. Genotype refers to the collection of…

Q: he allele for freckles (F) is dominant to the allele for no freckles (f). A freckled man and an…

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

Q: A gene for a particular trait that is expressed when two copies (homozygous) or just one copy of the…

A: The homozygous condition is the state in which two copies of a same allele of particular gene…

Q: In a Punnett square for a trait (X/x) that is autosomal and inherited by the dominant allele. The…

A: We can easily predict the genotype and phenotype of progenies using punnett square.

Q: f1)Which of the following best describes polygenic traits?     A single trait is affected by…

A: Polygenic Traits:  A polygenic trait is one that is influenced by a number of non-allelic genes.…

Q: By looking at the following table, circle the trait which is sex-influenced.       Genotype…

A: There are some traits which are influenced by the sex of the individual. In sex-influenced…

Q: What is the probability for two parents who are both heterozygous to have a child who exhibits the…

A: homozygous dominant = TT (Tall) heterozygous trait = Tt (Tall) homozygous recessive= tt (short)

Q: In pea plants, the tall allele is dominant to the short allele and the yellow pea allele is dominant…

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

Q: Example 1: Eye Color Example 3: Fur Color Example 2: Petal Color B- dominant brown eye allele b-…

A: The phenotype characteristics or phenotypic expression is determined by the presence of specific…

Q: The gene for eye color has several alleles. The allele for brown eyes is symbolized with B and the…

A: The alternate forms of a gene are called alleles. These are described as dominant or recessive…

Q: Two genes, each with a dominant and recessive allele, determine comb phenotypes as follows: Comb…

A: Given Two genes, each with a dominant and recessive allele, determine comb phenotypes as follows:…

Q: A person is heterozygous for ear shape. Ear lobes are dominant to no ear lobes. Which would be a…

A:

Q: When two different alleles that affect the same trait do not exhibit complementation, an…

A: Complementation occurs when the two mutant strains of an organism, non of which are the wild type…

Q: Baldness is a sex linked trait. What parental genotypes could produce a bald woman? Use H for normal…

A: Baldness represents a sex-linked trait. Normal hair- H bald hair - h In males, it is dominant, while…

Q: For each phenotype below, list the genotypes (remember to use the letter of the dominant trait)…

A: The term "phenotype" refers to an organism's observable physical properties, such as its appearance,…

Q: Two genes, each with a dominant and recessive allele, determine comb phenotypes as follows: Comb…

A: Genotype can be defined as the collection of all genes present on the nucleic acid of the…

Q: Below is a pedigree of a family with colorblindness. II-1 has a father who is colorblind, and II-1…

A: Correct answer is 1/2.

Q: Trait Dominant Allele Recessive Allele Blond (b) Blue (e) No dimples (d) No Widow's Peak (p) No…

A: A genotype for a particular trait or characteristic is defined as a collection/set of alleles coding…

Q: The best example for multiple alleles involves coat color in rabbits. Coat color in rabbits is…

A: 'Question 1 is not available in the image provided. So will solve question 8 for you. “Since you…

Q: In plants known as “morning glory”, the allele for the dominant red-flower color is incompletely…

A: In plants known as morning glory , there are red flowers  incompletely dominant over white flowers…

Q: A man that can roll his tongue is heterozygous for the trait marries a woman that cannot roll her…

A: The Punnett square is defined as a square diagram that predicts the genotypes of a specific test…

Q: Color-blindness is a sex-linked trait. A boy, whose parents and grandparents had normal vision, is…

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

Q: Jack and Beulah have two kids, Bill and Jill. Jack and Bill have a widow’s peak, which is a dominant…

A: The inheritance pattern of a genetic trait depends on its dominant or recessive nature and if the…

Q: Which genotype would be used to indicate an individual that has no recessive alleles? 1.aabb 2.AAbb…

A: When humans reproduce, each parent contributes 23 chromosomes (long strands of DNA) to the child.…

Q: in humans, normal skin pigmentation is influenced by a dominant gene (c), which allows pigmentation…

A: Albinism is passed on in an autosomal recessive inheritance pattern. This means a child has to…

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.