Among a species of butterflies, the color blue (B) is a dominant trait. Yellow color (b) is a recessive trait. If a pure blue butterfly (BB) mates with a pure yellow (bb), what will the offspring look like? A: A) They will all be blue. B) They will all be yellow. C) Half will be blue and half will be yellow. D) About 75% will be blue and 25% will be yellow.

Q: In Mexican hairless dogs, a double dose of a dominant allele may be lethal. What phenotype should…

A: The condition where two identical genes are present in an individual for a particular character, Is…

Q: If a heterozygous black hen mated with a white rooster, what is the probability an offspring would…

A: Homozygous and heterozygous are words that are used to describe allele pairs. Individuals carrying…

Q: In rabbits, the gene that codes for a spotted coat is dominant over the gene that codes for a solid…

A: Genes are generally referred to as the basic unit of heredity. They are a part of DNA and are…

Q: In humans, free earlobes are a dominant characteristic over attached earlobes. A person who has…

A: Answer: Alleles are the alternative forms of genes, which can be expressed in two forms:…

Q: For a recessive condition, two normal heterozygous individuals have children. What is the…

A: Suppose the allele affected in the condition is a.Normal:- AA Carrier:- Aa Diseased:- aa When Aa X…

Q: What findings led geneticists to postulate the multiple- factor hypothesis that invoked the idea of…

A: In biology, the gene is the primary base of heredity. It is the summation of the sequence of the…

Q: Suppose that in a mammalian species, the allele for black hair (B) is dominant to the allele for…

A: According to Mendelian inheritance, a single character is controlled by one or more genes and each…

Q: Can single-celled organisms have multiple simultaneous phenotypes? If so, can you propose an…

A: Single-celled organisms are those that have only one cell and these organisms can be unicellular…

Q: What is the term for situations in which a single functional allele of a gene is unable to mask an…

A: Here, it is required to identify the term for situations in which a single functional allele of a…

Q: Why is this factor essential for the dominant allele to “take over” the gene pool?

A: Discoverers of this genetic equilibrium (Hardy) developed this HW equation to show that the dominant…

Q: During the millennia in which selective breeding was practiced, why did breeders fail to uncover the…

A: Introduction Genes are the basic unit of inheritance which is responsible of transferring of…

Q: A cross occurs between a black homozygous mouse and a white homozygous mouse. They produce gray…

A: A cross is done to predict the trait of the offsprings. In a cross, certain specific traits are…

Q: What is the main difference between a homologous trait and an analogous trait?

A: Evolution is the process by which an organism inherits or adapts favourable characteristics that…

Q: From your research, you discover that in this species of fish, the allele for black color is…

A: An allele represents an alternate copy of a gene. A gene is a segment of DNA (deoxyribonucleic acid)…

Q: In bears fur colour can be either yellow or tan, and is determined by two alleles of the C gene. A…

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

Q: Using the Punnett's Squares below, name the offspring of all possible parent combinations. T T T t T…

A: TT TT TT TT So here all offsprings will be tall (homogeneous dominant).

Q: In mice, short hair is dominant over long hair. If a heterozygous shorthaired male is crossed with a…

A: Genetics is the study of genes, genes variation, and heredity. Inheritance is the foundation upon…

Q: How are individuals II-1 and  II- 2 related? A.They are siblings   B.They are married   C.They are…

A:

Q: b. BbRr x bbrr BR Br bR br BbRr bbrr br BbRr Bbr bx, bbor br How many F, Guinea pigs may have black…

A: INTRODUCTION The dihybrid cross result of BbRr × bbrr is given below.

Q: n guinea pigs, an allele for rough fur (R) is dominant over an allele for smooth fur (r), and an…

A: Phenotype of RRBB/ RrBb will have Rough and black coat Whereas Phenotype of  rrbb will have smoth…

Q: In cats, long tails (T) is dominant to short tails (t), and blue eyes (B) are dominant to orange…

A: Genotype is the genetic constitution of an organism.

Q: A rare recessive mutation causes rabbits that are normally white to be pink. If one in a hundred…

A: Given: A rare recessive mutation causes rabbits that are normally white to be pink .  White -…

Q: Of the 80 offspring that were produced, we might have expected how many of them to be rough and…

A: Dihybrid cross is the cross performed between two different genes having two different observed…

Q: What are outbreeding devices?

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Q: For the fish model organism Medaka (Aplocheilus latipes), genes at 2 loci (B, b and R, r) determine…

A: Introduction :- Phenotypic ratio is described as the probability of finding the patterns and…

Q: In this family tree, individuals with the trait are shown in black.  Circles represent biological…

A: Pedigree represents the familial representation of individual for a particular trait.

Q: Holstein cattle suffer from the condition citrullinemia, in which homozygous recessive calves die…

A: Citrullinemia is the condition where ammonia and other toxic substsances acumulates in the body. It…

Q: Mating took place between males and females of a fruit fly, and individuals appeared With the…

A: Genetic cross: The intentional mating of two separate individuals, resulting in progeny that…

Q: In chickens, black feathers (B) are dominant over white feathers (b). The sex ratio of chickens is…

A: Genetics is a branch of biology that is concerned with the study of Nucleic acids ( Ribonucleic…

Q: s, free earlobes are a dominant characteristic over attached earlobes. A person who has homozygous…

A: The free earlobes are a dominant: FF The attached earlobes  are recessive: ff

Q: homozygous recessive (aa,tetrapter) f1 produces homozygous (aa) f2, what is the dominant and…

A: Recessive character is expressed only in homozygous form. On the other hand,  dominant character is…

Q: Honey Bees are unusual in that male bees (drones) have only one copy of each gene, while female bees…

A: The genotype is defined as a part of the genomic constitution of an organism that controls different…

Q: In guinea pigs, the gene for black coat color is dominant to the gene for white coat color. A…

A: The transfer of character from parents to offspring is known as inheritance. Progeny receives its…

Q: ACTIVITY 3: Incomplete dominance vs. codominance   Coat color in dragons is controlled by 2…

A: Incomplete dominance and codominance are examples of non-mendelian inheritance. Complete dominance…

Q: Which of the following is true of recessive sex-linked genes? A. A female showing the trait will…

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Q: Red-green color blindness is a sex-linked recessive trait in humans. Two people with normal color…

A: The X linked recessive phenotype is usually found more frequently in males than in the females .…

Q: Consider a guinea pig with a homozygous genotype and a white fur color phenotype. a. What is the…

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

Q: c. BbRr x BbRr BR Br bR br BR BBRR Br bR br How many F, Guinea pigs may have black eyes and rough…

A: INTRODUCTION The dihybrid cross result of BbRr × BbRr is given below.

Q: Cross a male rat with heterozygous brown fur with female rat with white fur. Note that brown is…

A: Let the trait under discussion be labelled as R/r Hence, Brown:- RR or Rr White: - rr When brown rat…

Q: Mating took place between males and females of a fruit fly, and individuals appeared With the…

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Q: If we cross a pure red-eyed female rat with a white- eyed male rat, what is the expected ratio of…

A: The red trait is encoded by the gene present on X chromosome. The X^R allele encodes red color and…

Q: Plsssssssss helppppppppp, how can NF1 be spontaneous? Include the following terms: -genotype -…

A: Neurofibromatosis (NF) is a genetic defect caused by a mutation in NF1 genes located on chromosome…

Q: wo organisms are both true-breeding for different forms of a trait: one shows a dominant phenotype,…

A: A gene is present in different forms that are expressed in a phenotype; allele is a one of the…

Q: Why are monozygotic twins genetically identical, whereas dizygotic twins share only 50% of their…

A: If a female is pregnant with more than one baby at a time, then it is referred to as multiple…

Q: In a certain breed of dogs, a gene (L) codes for hair length. The dominant trait is short hair and…

A: In breeds of dog , gene for hair length is represented as L . Here ,  Short hair is a dominant trait…

Q: If our DNA contains all the information about who we are, how can something that does not involve…

A: DNA is versatile and a very complex molecule , even more complex is the regulation of expression of…

Q: In some bizarre-feathered chickens, F is the trait for frizzled feathers while S is the trait for…

A: An organism has phenotype and genotype. Phenotype is the observable characteristics and genotype is…

Q: In rabbits grey hair is dominant to white & black eyes are dominant to red.     -Cross 2 parents…

A: This is an example of dihybrid cross because it involves two pairs of contrasting traits at the same…

Q: How would you distinguish a trait caused by a sex-linked recessive allele from one caused by a…

A: Humans and other mammals have two sex chromosomes, the X and Y chromosomes. Females have two X…

Genetic Variation

Genetic variation refers to the variation in the genome sequences between individual organisms of a species. Individual differences or population differences can both be referred to as genetic variations. It is primarily caused by mutation, but other factors such as genetic drift and sexual reproduction also play a major role.

Quantitative Genetics

Quantitative genetics is the part of genetics that deals with the continuous trait, where the expression of various genes influences the phenotypes. Thus genes are expressed together to produce a trait with continuous variability. This is unlike the classical traits or qualitative traits, where each trait is controlled by the expression of a single or very few genes to produce a discontinuous variation.