A heterozygous woman with Type-A blood, and a man with Type-O blood, have a child. What are the odds that the child will have type O-blood?

Q: What is an allele is lethal only under certain conditions?

A: Lethal alleles as the term suggests are the death-causing alleles and occur due to mutation.  The…

Q: What is a varicosity

A: Varicosity is a dilated vein that mostly develops in legs.  The role of our veins is  to carry blood…

Q: Based on the information in Figure 2, what is the genotype of the father? * BB Bb bb

A: Genotype is defined as the genetic constituents of an individual.

Q: What is a genetic interval?

A: The functional unit of heredity is known as genes. They consist of deoxyribonucleic acids(DNA). Some…

Q: What is a genetic cross?

A: Genetics is concerned with the study of genes and their heredity from parents to offspring. A…

Q: Which gene  is inherited from the mother only?

A: Cell division is a process of a parent cell replicating it chromosomal content and dividing itself…

Q: What do monohybrid crosses reveal?

A: A cross that involves single pair of contrasting characters is known as Monohybrid cross.

Q: What is the phenotype?

A: Inheritance patterns are of different type’s   Mendelian inheritance, incomplete dominance,…

Q: What is an example of a lethal allele?

A: Alleles that cause an organism to die are called lethal alleles. The genes which result in viability…

Q: How many phenotypes are possible?

A: All cellular systems are controlled by proteins. Proteins are synthesized by the cell by a process…

Q: What is Homozygous and heterozygous in Mendelian Genetics?

A: George Mendel conducted hybridization experiments on garden peas for 7 years (1856-1863) and…

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: What does the symbol arg-1 mean? How would you test for this genotype?

A: The names of the gene must be informative as well as concise. Every gene name should be exclusive…

Q: What is cross-matching?

A: The cross-match procedure determines whether donor blood is compatible with recipient blood.…

Q: A woman with fair skin, blond hair, and blue eyes gives birth to fraternal twins; the father has…

A: The answer is here

Q: What will be the phenotypic ratio for a heterozygous cross between Pp and Pp?

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

Q: what is Nullisomy?

A: Each cell in the body contains the 23 pairs of chromosome or total of 46 chromosome, half of which…

Q: . What is the probability of producing a child that willphenotypically resemble either one of the…

A: The phenotype is the physical expression of the trait. It is an observable characteristic of an…

Q: Stefan has launched a paternity suit to determine whether he is the father of an orphan residing in…

A: Stefan has launched a paternity suit to determine whether he is the father of an orphan residing in…

Q: How many distinct phenotypes will a AaBbCc x aaBBCc cross have?

A: A trait is a characteristic feature that is unique to particular individual.  A trihybrid cross is a…

Q: What is Down's syndrome? Give its symptoms and cause. Why is it that the chances of having a child…

A: Human genetic disorders are caused by the absence, excess, or abnormal arrangement of one or more…

Q: If a woman who is a carrier for Tay-Sachs has children with a man who is not a Tay-Sachs carrier,…

A: Tay-Sachs disease is an autosomal recessive disorder. They are passed from the parents to the…

Q: individual male or female? How do you know? Was there anything unusual about your Karyotype?…

A: Human sex is mainly two types, male and female. Identification based on in general through…

Q: Which gene  is inherited from the father only?

A: A gene is a stretch of nucleotides present in the DNA molecule. It encodes information for the…

Q: Does it matter that the precise meaning of the allelic symbols T, t, R, and r is not given? Why or…

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

Q: How do we obtain two copies of each gene?

A: The fundamental unit of heredity is known to be as a gene. They are made of DNA and are found on…

Q: Anastasia was the youngest daughter of Czar Nicholas II of Russia. She had no known children, and…

A: Haemophilia is a sex-linked recessive disorder. The abnormal gene responsible for haemophilia is…

Q: What is a carrier?

A: A carrier has a genetic defect linked to a disease that may pass it on to others. An individual with…

Q: Is it possible to cross two different pure-breeding yellow zucchini strains and obtain all green…

A: Genetics is a branch of the biology involved in the study of genes, genetic variation, and heredity…

Q: Given that the individual has a dominant phenotype, is it possible to determine its genotype?

A: The allele combinations of a gene present in an organism determine the genotype and phenotype. The…

Q: What is pleiotropy?

A: Pleiotropy refers to the expression of multiple traits by a single gene. These expressed traits may…

Q: Without referring to the notation used to write the genotypes, how are you able to tell that a gene…

A: All these are defined by the Alleles they inherit and the type of phenotype they show  These can be…

Q: What is sickle cell anemia? What is the true inheritance pattern? How did scientists discover the…

A: ▪︎Sickle cell anemia is a disease in which the body produces abnormally shaped red blood cells that…

Q: What is an allelic mutation?

A: Gene is a unit of heredity that is transferred from 1 generation to another, from parents to their…

Q: Which genotype illustrates codominance of alleles that control blood type in humans?

A: An allele is the variant form of a gene occupying the same loci on a chromosome. An individual…

Q: What is the phenotype and genotype of offspring in the following conditions? (use the Punnett…

A: ABO blood group system consists of four types of blood groups - AB, O, A and B. ABO blood group is…

Q: What are the genotypes (and the ratio) when you cross B/b with B/b/b?

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

Q: What is a CC genotype?

A: in genetics we have 3 types of genotypes; homozygous dominant, heterozygous and homozygous…

Q: How does a positive ASO test for sickle-cell anemia determine that an individual is homozygous…

A: Sickle cell anemia:                  Sickle cell anemia is a genetic disorder of red blood cells. In…

Q: What is double fertilizaton?

A: Angiosperms are flowering plants and also considered as a diverse group of terrestrial plants.

Q: What is a reciprocal cross?

A: A genetic cross is the process of mating of two individuals which describes the comparison of their…

Q: If you cross a female carrier of color blindness with a normal male, what are the chances of having…

A: Genes are the functional unit of inheritance. They are the sequence of nucleotides that are present…

Q: If a male is homozygous dominant and a female is heterozygous, what is the probability that their…

A: Homozygous means that both the allele will be similar.  Heterozygous means that both allele will be…

Q: Is blood type an example of pleiotropy?

A: Pleiotropy is a condition in which a single gene controls multiple phenotype characteristics or…

Q: How do we know that monozygotic twins are not identical genotypically as adults?

A: An embryo is a stage of human development that is created by the union of eggs and sperm. Organs and…

Q: What is a phenotype?

A: Phenotype is derived from two Greek words: phainein, which means “to show,” and typos, which mean…

Q: What is 47,XXX Syndrome ?

A: A syndrome is characterized by a collection of medical indications and symptoms that are related to…

Q: What is bovine?

A: Domesticated animals reared in an agricultural environment to provide labor and commodities such as…

Q: What is the Characteristic pedigree for mitochondrial disease?

A: The genes located on the nuclear chromosomes obey the Mendelian law of inheritance. In the human…

Q: What advantage is there for individuals that are heterozygous for the sickle cell character?

A: Advantage for the individuals having heterozygous allele condition for sickle cell character.

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.