Why are the karyotypes with extra or missing X chromosomes, Turners syndrome, klinefelters syndrrome and triple x, relatively harmless ?

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

A: The male-determining gene in humans is termed as the sex determining region Y (SRY) gene. Generally…

Q: What is pseudoagouti (highly methylated) phenotype ?

A: Phenotype generally refers to the observable characteristics of an organism. It is generally…

Q: Why are the nonrecombinant offspring more common than the recombinant offspring?

A: Reproduction is a natural process in which offspring’s are produced from the parents. Reproduction…

Q: For a given cross, the expected number of double recombinants is 18 and the observed number of…

A: The measure of genetic linkage is termed as recombination frequency, which is used in the…

Q: Identify the genotypes of the following individuals:  Individual Genotype II-1   II-2   II-4…

A: Blood Group is basically an example of multiple Allele in which many alleles are involved . In…

Q: Why is the development of individuals with Klinefelter's and Turner's syndromes relatively normal,…

A: This syndrome occur due to presence of an additional copy of X chromosomes resulting into karyotype…

Q: For the binomial example in the book on the proportion of spermatogenesis genes on the X chromosome,…

A: P value for a two tailed test is always two times the p value for either of the one tailed test.…

Q: Why do the F1 chickens with genotype Cc Ii have white feathers?

A: In genetics, dominance is the phenomenon of one allele or variant of a gene on chromosomal masking…

Q: What is the difference between the X-Y and X-0 systems of sex determination?

A: The biological system that is known to determine the development of sexual characteristics is known…

Q: Define what is the Karyotype ?

A: The process in which the chromosomes of an organism are paired and ordered is known as Karyotyping.…

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: List down all the possible types of gametes produced by the following individuals with genotypes: а.…

A: The reproductive cells of an organism are called gametes. Additionally, they are referred to as sex…

Q: Why is the Barr body more brightly stained by DNA-specific dye in a cell nucleus?

A: Introduction: Barr body is the inactivated X chromosome found in the cells containing more than one…

Q: Why do deviations from the normal chromosome number of 46affect health?

A: Karyotype is a diagrammatic representation of arrangement of chromosomes. Humans have 46…

Q: the deletion of which chromosome causes obvious morphological and mental defects in the organism,…

A: Cri-du-chat syndrome, otherwise called 5p-(5p minus) syndrome or cat cry syndrome, is a chromosomal…

Q: An individual is heterozygous for a reciprocal translocation, with the following chromosomes: A • B…

A: Translocation is defined as transfer of chromosomal segments from one to another chromosome.…

Q: What type of chromosome or fragment cannot be formed by the following chromosome inversion…

A: An inversion is a chromosome rearrangement in which a segment of chromosome is reversed end-to-end.…

Q: How is a cross made in a fungus such as Neurospora?Explain how to isolate asci and individual…

A: Fungi are microbial organisms that are placed under Kingdom Fungi. They are multicellular eukaryotic…

Q: What is a complementation test?

A: Genetics is the branch of Biology dealing with the study of genes including their structure,…

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: what is Unequal crossing-over between duplications ?

A: Crossing over is the process during which the non-sister chromatids of a homologous pair of…

Q: What kind of chromosomal mutations is/are produced by unequal crossing over?

A: Mutation refers to both the process of altering a gene or chromosome and the outcome of that…

Q: Why is the frequency of recombinant gametes always half the frequency of crossing over?

A: Crossing over is the way in which exchange of genes between two chromosomes, lead to non-identical…

Q: A monosomic G. hirsutum is crossed with G. thurberi and produces offspring, some with 39 chromosomes…

A: Normal G. hirsutum is tetraploid. It has 13 tetraploid (4x) chromosomes and thereby have a total of…

Q: r rr rr Which best describes the parent genotypes in the punnet square provided?

A: Genetic inheritance is the passage of genetic information or Genetic character from the parents to…

Q: What is nonhomologous recombination?

A: Chromosomes are long thread-like structures that carry coded genetic information in the form of DNA.…

Q: In 1-3 sentences each define the following terms:  penetrance, expressivity, karyotype,

A: Chromosomes are defined as the thread-like structures present inside the nucleus of an individual's…

Q: What are chromosomal islands? Why are theyconsidered to be of foreign origin?

A: Chromosomes are long thread-like structures that carry coded genetic information in the form of DNA.…

Q: Why do test- crosses give a 1:1:1:1 ratio?

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

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

A: A gene is a unit of genetic material present within the DNA (deoxyribonucleic acid). Each gene…

Q: What are the methods to detect chromosomal rearrangements?

A: Chromosomes carry the genetic material DNA. Gene is a segment of DNA. The necessary information for…

Q: How can we determine the penetrance and expressivity of the genotype ?

A: The term Penetrance refers to whether or not the genotype has clinical expression.The term…

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

A: The male sex-determining gene in humans is termed as the sex determining region Y (SRY) gene.…

Q: In the karyotype shown here, identify the sex chromosomes. Is this individual a male or a female?

A: Introduction Any cell contains a specific number of chromosomes referred to as ploidy level or…

Q: What is the law of the superposition?

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

Q: Can a human male be a carrier of red-green color blindness?

A: The most prevalent types of color blindness are genetic, meaning they are handed down from one…

Q: The karyotypes shown here depict chromosomal abnormalities. Name the syndromes and if they are male…

A: "Genes" are the fundamental unit of heredity. They store genetic information in the form of DNA,…

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

A: Introduction :- The X and Y chromosomes are found in humans and most other mammals. Males have both…

Q: So why the barr bodies cannot be seen in the experiment?

A: Each organism's DNA sequence is unique. Its base-pair sequence might vary from time to time. It is…

Q: Explain the karyotypes 49,XXXYY ?

A: A karyotype is a collection of a species' or an individual organism's full set of metaphase…

Q: Is this karyotype male or female? What kind of error (if any) Name of syndrome

A: In karyotype, a picture of the person's chromosomes is taken in order to determine the chromosome…

Q: The karyotype pictured here represents O A. a normal male O B. a normal female OC.a Down Syndrome…

A: Answer: KARYOTYPE = It is the representation of chromosomes of an individual , from where we can…

Q: based on fig 1. Is this karyotype a male or female? Is there a chromosomal disorder? What type of…

A: Karyotype --  is complete collection of chromosomes of a person it may be a male or female karyotype…

Q: In com, male sterility is controlled by maternal cytoplasmic elements. However, the presence of  a…

A: Cytoplasmic male sterility is a phenomenon in which interactions between mitochondrial and genetic…

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.