What percentage of offspring produced by two parents with blue eyes would also have blue eyes? All offspring are expected to have black fur because all offspring will have at least one dominant allele for black fur which will overpower any allele for brown fur. What is a punnett square? Find how many gene pools there are and discover their various examples. Our experts can answer your tough homework and study a question Ask a question. What are the resulting percentages of genotypes of a cross between a homozygous dominant parent and a heterozygous parent? Two heterozygous white (brown fur is recessive) rabbits are crossed. What is the genotype?. Assume B is white, b is recessive brown; Bb x Bb. 25% BB, 25% bb, and 50% Bb. Question: Two heterozygous white (brown fur is recessive) rabbits are crossed. The following punnet square shows the results. The allele for blue eyes is "t" while the allele for brown eyes is "T".
Two Heterozygous White Brown Fur Is Recessive Rabbits Are Crossed
Seventy-five... See full answer below. In poodles, the allele for black fur (B) is dominant to the gene for brown fur (b). Describe all possible phenotypes. What are the phenotypes of the cross between two homozygous parents, one with a long neck and one with a short neck?
75% black feet and 25% brown feet. One is black and one is brown. In butterflies, the gene for black wings (B) is dominant to the gene for blue wings (b). The answer is "homozygous recessive and heterozygous" because homozygous means two of the same allele, while heterozygous means two different alleles. Two heterozygous white brown fur is recessive rabbits are crossed. What are the phenotypes of the offspring from the cross shown in the punnet square above? What is the chance that a child will have PKD if the father is unaffected and the mother is heterozygous for PKD? Because each rat has a dominant allele for black fur.
Two Heterozygous White (Brown Fur Is Recessive) Rabbits Are Crossed. What Is The Genotype?
The allele for black feet in a species of duck is dominant to the allele for brown feet. Learn more about punnett square, here: #SPJ2. Make a Punnett square. 50% long necks and 50% short necks.
The answer is "75% black feet and 25% brown feet" because phenotypes are the physical expression of an allele pair and the dominant allele for black feet will overpower the allele for brown feet. The sum of a person's attributes or observable characteristics is their phenotype. The answer is 100% long necks. Dominant alleles are represented by capital letters and recessive alleles are represented by lowercase letters. Two heterozygous white (brown fur is recessive) rabbits are crossed. a. Make a Punnett square. b. Describe all possible phenotypes. c. List probabilities of all possible genotypes. | Homework.Study.com. What percentage of chromosomes does each puppy share with its mother? Biologists use the figure to calculate the likelihood that a child will have a specific genotype.
Two Heterozygous White (Brown Fur Is Recessive) Rabbits Are Crossed?
The answer is 50% BB and 50% Bb, as shown in the punnet square below. Genotypes: BB, Bb, bb. Become a member and unlock all Study Answers. In a population of rats at a pet store, the allele for black fur is dominant (B) and the allele for brown fur is recessive (b). Which describes the phenotype of the parent rats? Two heterozygous white brown fur is recessive rabbits are crossed out. The parents genotypes from this cross are ______. The phrase "homozygous dominant" means the genotype of one parent is BB while "heterozygous" is a genotype of Bb. Brown fur is dominant to white fur in a species of rabbit and is represented with the alleles "B" and "b".
Unlike phenotype, which is only impacted by genotype, genotype is directly inherited from a person's parents. Therefore, a color determined by a recessive allele cannot be expressed when a dominant allele is present. A homozygous dominant crossed with a homozygous recessive parent is shown below. Learn more about this topic: fromChapter 17 / Lesson 24. The answer is "bb x bb" because in all the other scenarios, the black gene would be dominant over the blue gene in at least one offspring.
Two Heterozygous White Brown Fur Is Recessive Rabbits Are Crossed Out
Parent's genotypes are Bb and Bb andn the offsprings genotypes after crossing them will be BB, Bb and bb while phenotypes of 3 white rabbits and 1 brown. Since both parents had to have homozygous recessive alleles for blue eyes in order to express them, they both must have "tt" for a genotype. Two poodles are crossed. C. List probabilities of all possible genotypes. All Middle School Life Science Resources. The answer is 50% because each puppy shares 50% of chromosomes with its mother and 50% with its father. A rat with the genotype BB is crossed with a rat with the genotype Bb. A person's genotype is made up of all the alleles they have for a certain gene. The answer is "Both are black. "
One poodle is homozygous for black fur, and the other is heterozygous. Homozygous dominant and homozygous recessive. Phenotypes: 3 white, 1 brown. The allele for longer necks in giraffes is dominant to the allele for shorter necks. Try it nowCreate an account. Homozygous recessive and heterozygous.
This disease is usually caused by a dominant allele. Color Expression: Animals have different colors. What percentage of the offspring are expected to have black fur? 50% BB, 25% Bb, 25% bb. One is black and one is black with brown spots. Answer and Explanation: 1. A dog gives birth to 5 puppies. The dominant color is determined by a type of alleles present in an organism. For which of the following parental genotypes would 100% of offspring be expected to be blue? Example Question #10: Punnett Squares. Learn the definition of a gene pool and understand how it changes. Polycystic Kidney Disease (PKD) is a disease that can cause kidney failure.