Why do individuals with an excessive number of sex chromosomes often show minimum phenotypes?

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: In organisms with a ZZ-ZW sex determining system, from whic of the following can a female inherit…

A: introduction The inheritance of certain genes is often found on a particular chromosome at the time…

Q: Give several examples of chromosome number disorders.

A: Genetic disorders are defects that are caused by any genetic mechanism like mendelian genes ,multi…

Q: Explain the features of Y-chromosome profiles ?

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

Q: Describe how nondisjunction results in aneuploidy disorders, and describe the syndrome/ symptoms/…

A: Nondisjunction means the failure of homologous chromosomes or sister chromatids to separate during…

Q: Explain how nondisjunction produces monosomy and trisomy chromosomeconditions.

A: Mitosis: A type of cell division in which parent cell gives rise to 2 identical daughter cells with…

Q: Why is an X chromosome needed for survival?

A: The sex chromosomes or allosomes are X and Y chromosomes which determine the biological sex of an…

Q: How many Barr bodies are contained within the nucleus of a person with Monosomy X? In the nucleus of…

A: Introduction:- The X chromosome is shared by both males and females. Female somatic cells do not…

Q: Draw a Punnett square for the dihybrid cross. There are two known alleles of gene occupying a…

A: Dihybrid cross involves two genes in a cross. That's why the two traits are involved in this cross.

Q: Two phenotypically unaffected parents produce two children with familial Down syndrome. Regarding…

A: A phenotype is the observable physical and functional traits of an organism which result from the…

Q: Explain the Syndromes from AbnormalChromosome Numbers ?

A: Chromosomes are thread-like structures present inside the nucleus of the cell. They are made up of…

Q: For the following chromosome complements, what is the phenotypic sex of a person who has Q. XX with…

A: The sex-determining region Y (SRY) is located on the short branch of the Y chromosome, which…

Q: What are linked genes?  What is the difference between tightly-linked and loosely-linked genes?

A: Genes which get inherited In conjunction with other genes and are found on the same chromosome is…

Q: Can two normal individuals of the same species with sexual reproduction have identical genomes and…

A: Sexual reproduction requires gametes. Gametes are produced by meiosis. During meiosis, crossing over…

Q: How many chromosomes are involved in duplication?

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

Q: Why is it that so many of the sex-linked traits we talk about in humans are carried on X chromosomes…

A: Traits can be dominant, recessive, sex linked recessive or sex linked dominant. Dominance is the…

Q: What is the total number of chromosomes you receive from both parents?

A: Alleles are considered as the variant of the gene. DNA is composed of different nucleotides that…

Q: How many different types of gametes with respect to the R and B genes can an individual with the…

A: An individual with the genotype Rrbb has two alleles for the R gene (R) and (r) and one allele for…

Q: What is Sex-linkage?

A: Introduction In this question we will discuss about the sex linkage.

Q: Describe the Principles of Segregation and Independent Assortment in terms of Genetics. How do these…

A: The law of segregation describes how two alleles governing a single trait separates randomly during…

Q: aneuploidies in autosomal chromosomes likely to cause more severe phenotypes compared to…

A: Chromosomal abnormality or alteration is a change in the sequence of the chromosome. These…

Q: How does a chromosomal duplication occur?

A: When a part of chromosome is present in two copies or duplicated, it is known as duplication. This…

Q: In January 2019, the Indy Star (Indianapolis, IN) published a story about a male calico cat named…

A: Inheritance pattern is a type of pattern which evaluates how traits are transferred from parental…

Q: In C. elegans, lon-2 and unc-2 are recessive mutations that are 8 map units apart on the X…

A: A map unit is defined as the distance between two linked gene pairs where 1% of the products of…

Q: Can two normal individuals of the same species with sexual reproduction have identical genomes and…

A: The karyotype of an organism depicts the arrangements of its chromosomes. It is used to demonstrate…

Q: Define chromosomal interference?

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

Q: Why would extra or missing chromosomes result to abnormal phenotypes?

A: Introduction: Chromosomes are thread-like structures. Chromosomes are present in the nucleus of…

Q: What is the difference between alleles and homologous chromosomes?

A: The term 'chromosome' has been derived from the Greek words which means 'color (chroma) and body…

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…

Mitochondrial Mutations

A mitochondrion is a cellular organelle that serves as the site for cellular respiration and energy production (ATP or Adenosine Triphosphate). It is a double-membrane-bound organelle and is only present in eukaryotic cells.