Detached earlobes in humans are a result of the presence of a dominant allele. In a class of 30 students, 4 students have attached earlobes. How many of the students are likely homozygous dominant for the trait? 4, 12, or 14

Q: From a cross of heterozygotes, which of the following phenotypic ratios suggests a lethal allele in…

A: A heterozygote is a person who has two copies of the same allele at the same genetic locus; a…

Q: When many families were tested for their ability to taste the chemical PTC, the parental pairs were…

A: The ability to taste PTC is a dominant trait. Taster = TT, Tt Non taster = tt

Q: Using the concepts of non-mendelian genetics, what the phenotypic ratio of the offspring if two…

A: Option b is correct - 3 pea plant with purple flower : 1 pea plant with light violet flower. BB or…

Q: In mice black fur (B) is dominant over white fur (b). What is the phenotypic percentage of offspring…

A: Hi, Thanks For Your Question.  Answer : Correct Option Is 50% Black ; 50% White

Q: Black fur is dominant over gray. If a father is heterozygous dominant and the mother is homozygous…

A: Given data: Black fur is dominant over grey. Thus, B will represent black fur and b = grey fur…

Q: In rabbits, an allelic series helps to determine coat color: C (full color), cch (chinchilla, gray…

A: DNA is the genetic material in most living organisms. It is the information hub of the cell that…

Q: A heterozygous green eyed monster is crossed with a purple eyed monster. a)What proportion…

A: Organisms can be homozygous or heterozygous for a gene. An organism can be homozygous dominant if it…

Q: In humans brown eye color is dominant to blue eye color. Suppose that your mother is homozygous and…

A: According to the question, the brown color of the eye is dominant over the blue color of the eye.…

Q: In mice, the gene C for colored fur is dominant over its allele c for white. The gene B for normal…

A: Introduction Genetics makes a distinction between genotype and phenotype. An organism's entire…

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: In chickens, comb shape is determined by genes at two loci (R, r and P, p). A walnut comb is…

A: A rose comb is produced when at least one dominant gene is present at the first locus and two…

Q: Coat color in cats is controlled by multiple alleles at a single locus, with ordered dominance as…

A: INTRODUCTION Phenotype The physical appearance of an organism.

Q: In rabbits, an allelic series helps to determine coat color: C (full color), cch (chinchilla, gray…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: The gene dimples is responsible presence or absence of dimples. People with a copy of the dominant…

A: As Dominant allele (D) has dimple whereas recessive allele (d) does not have dimple.So, DD -…

Q: In the guinea pig, one locus involved in the control of coat color may be occupied by any of 4…

A: The gene is the basic structural and functional unit of heredity and it makes up the…

Q: In jellyfish, let's say that long tentacles are produced by a sex-influenced allele that is dominant…

A: Given information In jellyfish, long tentacles are produced by a sex-influenced allele. The allele…

Q: A person is heterozygous for the Freckles phenotype (Ff) and also heterozygous for the PTC-tasting…

A:

Q: The bird species described in question 5 has an ornamental plumage on its head.  The plumage…

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

Q: In birds, wingspan is determined by two genes, one with complete dominance of one allele over the…

A: The mean of the data is determined by  Mean = ∑total number of valuesvalue Mean = (20 + 19.6 + 18.3…

Q: In fruit flies, the allele for long wings (A) is dominant to the allele for short wings (a), and the…

A: Genes are the basic functional units of the heredity, that aids in transferring the genetic…

Q: P generation white eyed males X Red eyed females F1 generation Red eyed females X Red eyed males F2…

A: Genotypic and phenotypic ratio Genotypic ratio as the name suggests defines the gene whether they…

Q: In guinea pigs, the trait for ruffled fur is dominant over the trait for smooth fur. If a…

A: The test cross is the cross between a heterozygous and a homozygous recessive parent. This test is…

Q: The colors of chicken feathers follow a codominant pattern. Both Black (B) and White (W) feathers…

A:

Q: In a different population of mice in New Mexico, coat coloration is influenced by a single gene…

A: The skin color is encoded by the B gene.

Q: If body-color B is dominant to green body color b what would the genotype be for a heterozygous…

A: It is given that the body color blue is dominant and is represented by B whereas the body color…

Q: the A and the S alleles are co-dominant. What is the phenotype of a heterozygote (AS)?

A: Codominance is a genetic concept where two different alleles of a gene are equally expressed in a…

Q: In humans the ABO blood system is controlled by multiple alleles. Allele Ia produces antigen A,…

A: The ABO blood grouping in the humans are done on the basis of the presence or absence of a…

Q: In humans the absence of a cleft chin is dominant to the presence of a cleft chin. Two individuals,…

A: In human genetics, traits are often inherited based on the principles of dominance and…

Q: In cats, white patches are caused by the dominant allele P while p/p individuals are solid colored.…

A: 1.) Understanding the GeneticsCoat Color:Dominant Allele (P): Produces white patches.Recessive…

Q: Purple flowers (F) are dominant over white flowers (f). If two heterozygous flowers are crossed,…

A: Dominant allele = F (purple) Recessive allele= f (white) When two heterozygotes are crossed Ff×Ff We…

Q: In rabbits, an allelic series helps to determine coat color: C (full color), cch (chinchilla, gray…

A: In rabbit, the alleles for coat color are C – full color, cch – chinchilla or gray color, ch –…

Q: You are studying a disorder that is based on the genetic cómposition at three loci. Assume that a…

A: Given value :  Dominant allele adds up 6 units of risk  recessive allele adds up 2 units of risk…

Q: In humans, there are three alleles for blood type: A, B, and O. A and B are codominant over O. A…

A: Blood group inheritance is multiple allelic in nature. Type A blood group can have IA IA/ IA i…

Q: Given the allelic frequency of A = .5 , answer the following 1. What is the homozygous dominant…

A: If a population is remain in the Hardy-Weinberg equilibrium then the allele and the genotype…

Q: In a dihybrid cross of two bi-allelic Mendelian genes, A (two alleles – completely dominant A and…

A: Inheritance is the process of transmitting the traits from parent to offspring. Traits of an…

Q: The allele A is brown fur and the allele a is white fur. In a mating between a heterozygous male and…

A: Answer: HETEROZYGOUS : It is the pair of alleles which are not same, where one is dominant and the…

Q: How can the addition of excess mineral nutrients to alake threaten its fish population?

A: The excess mineral nutrient makes the water of the lake hypertonic than the fluid of the fish body.

Q: For the polydactyly trait, P = polydactylous (having 6 fingers), p= normal (having 5 fingers). What…

A: In genetics, polydactyly is a trait where an individual has more than the usual number of fingers or…

Q: Butterflies show 3 phenotypes due to incomplete dominance at the D locus with alleles DY and DB…

A: Incomplete dominance is a type of inheritance in which neither of the alleles of a gene is…

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.