Given that there is a trait determined by the alleles A and a, where A is dominant, i.e., the presence of A determines the phenotype.  Assume that two parents have four children, and assume that nothing is known about the parents.  One of the four children shows the recessive condition (so its genotype is aa) and the other three show the dominant trait (so their genotype is either Aa or AA).   What can we conclude about the parents? Group of answer choices - at least one parent shows the dominant trait - Both parents are heterozygous - Both parents have at least one recessive allele

Q: One parent with the Achondroplasia phenotype and a normal parent have 2 children. Both children have…

A: Achondroplasia is a type of osteochondrodysplasia in which the cartilage at the ends of the limb…

Q: Suppose that in goats, an independently sorting autosomal allele that produces a bearded phenotype…

A: Genes are the structural and functional units of heredity that carry nucleotide sequences that…

Q: Male-pattern baldness is an example of a sex-influenced trait. The baldness allele, which causes…

A: Option b NN x BN

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: In humans, normal skin color (A) is dominant over albino (a).  An albino man marries a normal woman…

A: Alleles are passed down to the organism's progeny. They come in two varieties: dominant alleles and…

Q: What are the possible phenotypes (and their probabilities)?

A: Dihybrid cross It is mating between two organisms that are identically hybrid for two traits. This…

Q: A coat color of a horse is governed by many different gene pairs. Dominant B will give the horse a…

A: Given that, B is the dominant gene which is responsible for black color and b is the recessive one…

Q: Let’s suppose a gene exists as a functional wild-type allele and anonfunctional mutant allele. At…

A: Dominance is a phenomenon in which an individual has two allelic forms that expresses one over the…

Q: Duchennnes’s muscular dystrophy is caused by a rare sex-linked allele and usually

A: Here , Duchennnes’s muscular dystrophy is X-linked recessive disease. Here given that mother's…

Q: Eye Color is a trait that involves a number of genes. To simplify our example, we can break down the…

A: The genotype is the part of the genetic makeup of a cell which determines one of its…

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 domestic cats, the allele (L) is a dominant allele for short-hair trait. The recessive allele for…

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

Q: In man, the allele for normal color (A) is dominant to the allele for albinism (a). A normal man…

A: Introduction :  Albinusm is an autosomal recessive disorder in which there is reduced or absent…

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

A:

Q: Mendel's second postulate states: When two different unit factors responsible for a characteristic…

A: The three basic Mendel’s laws known as laws of inheritance are: Law of Dominance Law of Segregation…

Q: In rabbits, short hair is dominant (H) and long hair is recessive (h). In percentages, what is the…

A: An allele is a variant form of a given gene.  Phenotype is the observed physical traits of an…

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: Two parents, both with blood type A, have three children in a row with blood type O. a. Is this…

A: There are four different blood types in the ABO Blood Group System: A, B, AB, and O. Each of these…

Q: In domestic cats, the dominant allele A encodes pigmented fur and the recessive allele a encodes…

A: There are certain traits in animals that follow the Mendelian pattern of inheritance. These animals…

Q: Albinism is an autosomal (not sex-linked) recessive trait. What is the probability that, out of 3…

A: Albinism is an autosomal recessive trait. Most often, the parents of an individual with an autosomal…

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: The clamshell orchid can have a dorsal sepal that is either bright purple (P) or yellow (Y), and may…

A: This question involves the principles of Mendelian genetics, specifically the concepts of dominance,…

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: This pedigree (below) shows inheritance of a genetic disorder in a family. Assume the trait is rare.…

A: Gene is the segment of DNA responsible for heredity. Two or more alternative forms of genes…

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: 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: In a species of plant, some individuals have smooth leaves and some have hairy leaves. The character…

A: Given: A species of plant, some have smooth leaf and some have hairy leaf. To find: Simplest way to…

Q: "a" is a recessive allele of gene "A". Individuals with "aa" genotype suffer from a disease "D". If…

A: A disease is an abnormal condition that affects the structure or function of an organism and is…

Q: Four alleles determine a rabbit’s coat colour: agouti (C), chinchilla (cch), Himalayan (ch), and…

A: It is given that chinchilla rabbit is crossed with albino rabbit, since it’s not mentioned whether…

Q: In poultry, two independently assorting genes together determine the structure of the comb. Thus,…

A: Given: In poultry, two independently assorting genes together determine the structure of the comb.…

Q: In horses, there are three coat colour patterns called cremello (beige/light brown), chestnut…

A: In the given genetic condition the coat colour in horse produce three types of phenotype in…

Q: In mice, the presence of a dominant A allele results in the agouti pattern of fur color, whereas the…

A: The alleles are the alternative forms of a gene that are located on the same locus of a homologous…

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.