Explain what the word nondisjunction means?

Q: are the gene pairs in non allelic interaaction, recessive epistasis independently segragating?

A: Gene interaction: When two or more non-allelic genes influence the outcome of a single trait this is…

Q: Define the monohybrid cross ?

A: Gregor Mendel is known as the Father of genetics and he discovered that traits/ characters are…

Q: What does the expression wild type mean?

A: Genetic traits are regulated by genes.

Q: Describe some syndromes that result from chromosomal nondisjunction?

A: Nondisjunction of chromosome: - During cell division, it is the failure of separation of homologous…

Q: How can you explain that not all Down syndrome cases are due to nondisjunction?

A: The syndrome can be analyzed as per the clinical signs and side effects that are associated with one…

Q: Aa x aa，Aa x aa， Aa x AA，Aa x Aa. which of those fours are considered as a monohybrid cross？and…

A: The Punnett square is a graphical representation or tabular diagram that predicts the genotype and…

Q: Explain the following term: Allele:

A: DNA is the genetic material present in most of the living organisms. The DNA is made up of 4…

Q: Explain why the reciprocal cross yields a different result from the first cross

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

Q: What is phenotype? Explain with the help of an example.

A: The trait is affected by the genes, proteins, other chemical present inside the cell, interaction…

Q: Diagrammatic representation of a test cross?

A: A test cross is used to determine whether the dominant phenotype of an individual is due to…

Q: What is the diagnostic test for linkage?

A: Chromosomes are the condensed form of DNA that carry all the genes.  Genes are represented in the…

Q: Why can a person carrying a translocation be normal except for theinability to have children?

A: Translocation is a hereditary change were a piece of one chromosome servers and connects to another…

Q: Explain the consequences of a translocation or an inversion.

A: Translocation: In this, a part of the chromosome is broken and may be joined with non homologous…

Q: What is random (independent) assortment and when does it occur?

A: Gene is the specific sequence of nucleotide in deoxyribonucleic acid (DNA) or ribonucleic acid (RNA)…

Q: What is the principle of segregation? Why is it important?

A: The transmission of genetic characters from parents to offspring is known as Heredity.

Q: Which one cannot be a reason for chromosome disjunction anomaly?

A: Disjunction anomaly  When the chromosomes of a cell unable to separate and each daughter cells got…

Q: What is trihybrid cross ?

A: Genetics is a part of science concerned about the investigation of genes, hereditary variety, and…

Q: Does "end A" represent the plus or the minus end? Explain. "A" End

A: End pA represent the plus end.

Q: Define fussion of two gametes?

A: Reproduction:   Reproduction is the process that ensures the continuity of species on earth. It is…

Q: Define the term Homonym?

A: It is important to pay attention to the meaning when reading so that what you mean isn't…

Q: Define segregation,

A: To define: To define segregation and it uses

Q: Which phenomenon is an exception to Mendells principle of independent assortment?

A: Mendel was the father of genetics. He gave three laws of heredity. These are Law of dominance Law…

Q: Explain The law of segregation?

A: Mendels laws of inheritance based on monohybrid cross are as follows : 1. Law of dominance.  2. Law…

Q: How linkage and crossing over is inter related explain with suitable example

A: Genetic linkage is defined as the tendency of genes to stay together in a chromosome and are called…

Q: What does compound heterozygous mean and explain What causes heterozygous?

A:

Q: What are the laws of segregation and independent assortment

A: Gregor Johann Mendel is considered the father of genetics for his work on the laws of inheritance.…

Q: Explain mendelian disorders?

A: Mendelian inheritance types are autosomal dominant, autosomal recessive, X-linked dominant and…

Q: What is crossing over frequency?

A: Crossing over occurs during Prophase (diplotene stage) of meiosis-I and plays a key role in genetic…

Q: What is independent assortment?

A: The law of inheritance was proposed by Gregor Mendel in 1865 using Pisum sativum (garden peas). From…

Q: Contrast genotype and phenotype.

A: The genotype is a set of genes in DNA responsible for specific trait while the phenotype is the…

Q: What is inversion heterozygote?

A: Inversion is a chromosomal rearrangement when a segment of chromosome breaks and then rejoins in…

Q: How is heterozygous written?

A: The alternate forms of gene are referred to allele. An allele determines the hereditary…

Q: What is the rule of inversion?

A: Genes are the functional unit of heredity. The genes code for proteins which are vital for growth…

Q: How does nondisjunction lead to disorders in chromosome number?

A: When the nucleotides sequences in the genome of an organism are altered or changed due to mistakes…

Q: why Most polymorphisms areanonymous?

A: Polymorphism:   It is set place in population when two members or at least two or more members of…

Q: What is heterozygous variant?

A: The term heterozygous variant belongs to a subdivision of biology, genetics. Genetics is the study…

Q: What is crossover? When does it happen? What are the consequences?

A: The cell cycle is the sequence of events that take place in the cell. The cell cycle has 4 main…

Q: What is the law of the superposition?

A: Answer - The law of superposition is a law of stratigraphy science

Q: How does nondisjunction lead to abnormalities in chromosome number? Describe two types of genetic…

A: The failure of chromosome to seperate properly  during mitosis or meiosis is called nondisjunction…

Q: Explain the term out-crossing.

A: There are two types of breeding namely, a) In-breeding b) out-breeding The out-breeding further…

Q: What is the difference between polygeny and pleiotropy?

A: Biological inheritance, also called heredity, is the process by which different traits are passed on…

Q: Explain Dihybrid Crosses Reveal the Law of Independent Assortment?

A: The law of independent assortment was introduced by a scientist named Mendel. This law states that…

Q: Explain why Huntington disease is inherited as adominant allele while cystic fibrosis is caused by…

A: The autosomal recessive pattern of inheritance is attributed to the phenotype caused by the…

Q: What is a crossing over, and what is the purpose of it?

A: The cell cycle is the orderly series of events allowing a cell to grow and divide forming daughter…

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.