In maize, a Ds or Ac transposon can alter the function of genes at or near the site of transposon insertion. It is possible for these elements to transpose away from their original insertion site, causing a reversion of the mutant phenotype. In some cases, however, even more severe phenotypes appear, due to events at or near the mutant allele. What might be happening to the transposon or the nearby gene to create more severe mutations?

Q: What would be the most likely effect on fruit-fly development of a deletion in the nanos gene?

A: Drosophila melanogaster is a fly species in the family Drosophilidae. This fly is commonly called as…

Q: Describe how P elements are used to producetransgenic Drosophila.

A: Genetics is a branch of science that deals in the study of genes, heredity, and genetic variation of…

Q: 1. a)What would happen if the aminoacyl tRNA synthetase responsible for charging alanine tRNAs also…

A: The polymerization of amino acids according to the codons on mRNA to form proteins is known as…

Q: During the process of * in eukaryotic cells, a * in the cytoplasm is read by e in the + direction,…

A: DNA --> RNA --> Protein Transcription: conversion of DNA sequence into mRNA by RNA…

Q: A wild type strain of Drosophila was found to carry a transposable element called copia. From this…

A: The following is a short summary of the genetics terminology and Drosophila notation used in this…

Q: You sequence a gene in Drosophila melanogaster and D. simulans. You observe 5 non-synonymous…

A: Gene sequencing is used to determine the nucleotide order in a DNA molecule that makes up the…

Q: . In Figure 8-22, show how the double-stranded RNA isable to silence the transgene. What would have…

A: Double stranded RNA-mediated interference is a method of silencing the gene expression in a wide…

Q: Given a mutation in the promoter, coding region, and/or non-coding region of a gene, explain how…

A: The mutation is a sudden heritable change in the genetic makeup of a cell which mostly results in…

Q: The anticodon of a particular tRNA molecule is    what is it called when heterozygous have a…

A: tRNA  The tRNA is an adaptor molecule which made up of RNA. the main function of tRNA molecule is to…

Q: What would be the effect of deleting the Dnmt3 gene in honeybees?

A: Insects are any animal of the class Insecta. It comprises small, air-breathing arthropods having…

Q: times of nutrient stress, the cellular slime mold Dictyostelium discoideum develops one of two cell…

A: Dictyostelium discoideum is a species of soil-dwelling amoeba belonging to the phylum Amoebozoa,

Q: How will this modified cro protein interact with the three OR sites, and how would cro expression be…

A: Bacteriophages are viruses that infect bacteria. Like other viruses bacteriophages are also made up…

Q: One mutation is a deletion of six nucleotides in the second exon of the gene and the other mutation…

A: Introns and exons are nucleotide sequences within a gene in mRNA. The conversion of DNA to RNA is…

Q: In a mutant mouse, it was discovered that a gene "W" is moved from its original chromosomal locus to…

A: Introduction  A mutation is a change in the structure of a gene, which is the fundamental unit of…

Q: When the organization of adjacent genes with highly similar sequences is in an inverted orientation,…

A: The physical unit of heredity is known as the gene. The term "inversion" refers to a mutation that…

Q: Describe the difference in the effects of a mutation in a gap gene versus one in a pair-rule gene.

A: The genes consist of hereditary information in the deoxyribonucleic acid (DNA) sequences and is…

Q: The HbβS(sickle-cell) allele of the human β-globingene changes the sixth amino acid in the…

A: Sickle cell anemia is a blood disorder in which an improper folding of hemoglobin occurs. In this…

Q: Explain how transposable elements can cause themovement of genes that are not part of the…

A: Transposon:  These are those elements that can change DNA sequence location within a genome.…

Q: In the fX174 genome, describe the difference between how thegene B and gene A* proteins are made

A: fX174:- Craig venter and his group reported the genome of fX174 in in-vitro conditions. It is a…

Q: yeast cells, telomerase remains active and maintains telomeres of about 300 base pairs. Propose what…

A: The end areas of chromosomes are called telomeres , are repetitive sequence that protect gene from…

Q: Explain how the presence of tryptophan favors the formation of the 3–4 stem-loop.

A: The stem-loop, an intramolecular base pairing, is the pattern that occurs commonly in the RNA or…

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.