Explain the phenomenon of pleiotropy.

Q: What environmental factors may increase incidence of chromosomal abnormalities? Name at least three.

A: Chromosomal abnormalities or aberration is defined as the defect in the structure or the number…

Q: What do monohybrid crosses reveal?

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

Q: Explain about the pleiotropic gene.

A: A gene is a stretch of nucleotides present in the DNA. It codes for the synthesis of an RNA or…

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: describe some of the human genetic disorders that are caused by nondisjunction?

A: Step 1 Nondisjunction is the non separation of homologous chromosomes during anaphase I that brings…

Q: Explain reciprocal crosses?

A: Gregor Johann Mendel studied the inheritance pattern on pea plant. He concluded that genes are…

Q: Explain complete and incomplete penetrance and give an example

A: Penetrance is basically the probability of the gene or the trait of being expressed. Despite the…

Q: Explain the features of Y-chromosome profiles ?

A: Introduction  Chromosomes are classified into two types: Autosomes and Allosomes/Sex chromosomes.…

Q: Describe the expected outcomes of monohybrid crosses involving dominant and recessive alleles

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

Q: Differentiate between pleiotropy and epistasis.

A: A gene is that sequence of DNA that codes for a particular trait, it may or may not be influenced by…

Q: explain the results of crossing over?

A: Crossing over is the exchange of genetic material between non-sister chromatids of homologous…

Q: Define the following: monozygotic and dizygotic twins,

A: BASIC INFORMATION  FERTILIZATION  It is the process of the fusion of the male as well as the female…

Q: explain the Phenotypic effects of duplications

A: Duplication of chromosome refers to an addition of an extra chromosomal arm attached to a…

Q: Explain The problem of pleiotropic or redundant genes?

A: Pleiotropy can be defined as the phenomenon of a single gene that is responsible for affecting…

Q: Explain the Pedigree Analysis and Genetic Disorders ?

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

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 are the function of pleiotropy?

A: It has been observed and studied that most of the biochemical pathways are interconnected in living…

Q: Which of the following is the most common type of chromosomal disorder? O a. Kleinfelter's Syndrome…

A: Any syndrome produced by an aberrant chromosome number or constitution, marked by deformities or…

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 epistasis, pleiotropy, and polygenic inherance and give each. an example of

A: The nonadaptive evolution is defined as any change in allele frequency that does not lead a…

Q: Discuss the postulates of Mendel in relation to meiosis.

A: It is widely accepted that the modern science of genetics startted from the the discovery of the…

Q: What is pleiotropy?

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

Q: explain Partial trisomy 18.

A: Chromosomes are defined as the thread-like structures that carry genetic information. In humans, 23…

Q: explain Mosaic trisomy 18

A: Trisomy is a kind of aneuploidy that means an abnormal number of chromosomes. The cells of sexually…

Q: Differentiate a chromosomal disorder from a single-genedisorder.

A: Genes are composed of nucleic acid strands that carry the genetic information that determines the…

Q: State two factors that influence single-gene inheritence patterns?

A: Inheritance is defined as the transfer or passing on of genetic traits from the parents to their…

Q: Which of the options below is not an example of Pleiotropy?

A: Ans.This phenomenon is called pleiotropy when a single gene begins to affect multiple traits in an…

Q: Explain what the word nondisjunction means?

A: Cell biology is the field of biology that studies the cell’s function and structure.

Q: Distinguish among Klinefelter, Down, and Turner syndromes. Which syndromes are found in both sexes?

A: Introduction A genetic condition is an illness caused in part or entirely by a deviation from the…

Q: Is blood type an example of pleiotropy?

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

Q: According to the Hardy Weinburg equation, which variable would represent the heterozygous…

A: Hardy- Weinberg equation is used to calculate genetic variation of a population at equilibrium. The…

Q: Define chromosomal interference?

A: Chromosomes are the thread-like structures that appear only during cell division.

Q: Compare and contrast pleiotropy and polygenic inheritance

A: Pleiotropy is a phenomenon in which  one gene starts affecting multiple traits of living organisms.…

Q: Explain why Huntington disease is caused by a dominant allele

A: Alleles refer to two or more variant form of a gene. Genes are the basic structural and functional…

Q: Define the multiplication and addition rules, andexplain how these rules can help you predict the…

A: A gene is the basic structural and functional unit of heredity. In humans, a gene is composed of two…

Q: What is pleiotropy in biology?

A: The traits are the character that is encoded by a gene. For example- eye color is a phenotypic…

Q: Define recessive lethal allele

A: Mendel gave the law of dominance. This law states the difference between recessive and dominant…

Q: Which is an example of pleiotropy?

A: The genetics is the branch of biology that deals with the study of genes, genetic variation and…

Q: Compare epistasis and pleiotropy

A: Introduction  Genes are the key component of genetic material that controls almost all cellular…

Q: Please explain and give an example of pleiotropy

A: Gene interaction is a set of functional association between genes.  Gene interactions occur when two…

Q: explain Phenotypic consequences of deletion

A: Chromosomal aberrations are changes in the number and arrangement of genes in the chromosomes. They…

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 the term pleiotropy.

A: Genes are the basic structural and functional unit of heredity. They carry coded genetic information…

Q: When is the only time crossing over can occur?

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

Q: identify two main themes underlying the phenomena of chromosomal changes?

A: Chromosome is a compact structure of a DNA molecule wrapped around some proteins. It is generally…

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.