What is a gene? Why are regulatory genes important to the evolutionary process? What is a mutation as defined in this course and readings. Are the end results of a mutation always "good" or always "bad"? Or is a mutation perhaps neither always good or always bad and could be "neutral or no effect" or "adaptive" in some situations? Does it depend on the gene, amino acid, protein, and case-by-case scenario? What genetic evidence suggests that humans are a part of a biological continuum with all life forms. Does the number of genes in a biological organism correlate, predict, or denote the complexity of the organism? Does the number of chromosomes in a biological organism correlate, predict, or denote the complexity of the organism?

Q: In a first attempt to describe the relationship between genes and phenotypes, Beadle and Tatum in…

A: One gene-one enzyme hypothesis was discovered in the early 1940s that each gene controls the…

Q: 2. Imagine a combination of microevolutionary mechanisms other than mutation/se- lection. How do you…

A: Microevolution is characterized as the adjustment of the allele frequencies over the long haul in a…

Q: In this unit you learned about the Hershey and Chase experiment that showed that DNA is the genetic…

A: The basis of inheritance is the information passed down from parent to offspring. The replication of…

Q: You are studying Hox genes in crane flies (Leptotarsus testaceus). The cranefly genome is sequenced,…

A: To find: Where the homologue of EVE gene is expressed in cranefly embryos

Q: Since we have known the sequence of the human genome for almost two decades, why sure of the total…

A: Because it is difficult to tell where one gene ends and another begins .  Another difficulty is same…

Q: Which statement(s) below regarding DNA mutations is true: A. Mutations only occur in genes B.…

A: Ans: D) Mutation can occur in promoters.   Mutation is a change in the sequence of DNA due to…

Q: Some genes evolve more rapidly than others. But how can this be demonstrated?

A: With the sequencing of genomes of many species, the geneticists are giving a detailed picture of the…

Q: Asthma is a common medical condition that is influenced by genetics and environment. In the Us,…

A: It is a multiple choice question.

Q: For the expression of traits gene provide only the potentialily and the environment provides the…

A: The nature of the gene can be understood in terms of either dominant or recessive in nature. These…

Q: You have sequenced a few individuals in the population and found out that there are only two alleles…

A: Mutation is defined as the change in sequence of a gene in the DNA.

Q: A given organism has a gene A that produces a protein, cellular albumen, which traps water within…

A: Genes are the hereditary material made up of DNA, found at a specific location on a chromosome.

Q: You are working in a lab that studies stickleback fish. These fish normally have three spines that…

A: Introduction : The presence of three spines on the back of the sticklefish is due to the mapping of…

Q: Genetic mutations can provide insights into the mechanisms of complex cellular or developmental…

A: The term- mutation has been described as changes to the base pair sequence of the genetic material…

Q: Random mutations only very rarely result in changes in a protein that improve its usefulness for the…

A: Introduction: The genome of every human is different because of the occurrence of mutations taking…

Q: The phenotype of a heterozygous mouse (Aa) is agouti.  The agouti banding pattern is due to altered…

A: * Homozygous dominant and Heterozygous will produce agouti that is AA or Aa respectively  and the…

Q: In the replica plate experiment, it shows that mutations are random. However, certain environmental…

A: Introduction: The replica plate experiment is a method used in microbiology to examine how…

Q: What role does epigenetics play in the process of genetic evolution?

A: Genetics and evolution have traditionally been understood in terms of changes to the sequence of…

Q: Beadle and Tatum's experiments led to the "one gene - one enzyme (protein)" hypothesis. In…

A: The genes are the functional part of the DNA that are responsible for the production of RNA by the…

Q: Which of the following statements about the differential expression of human genes is correct?

A: There are three postulates of differential gene expression, two of which states that -  1. Every…

Q: Mutations in DNA may or may not result in a change in the phenotype of an organism. In which of the…

A: Ecological succession can be defined as the gradual progressive accumulation of changes in the…

Q: What is a silent mutation (in your own words) and propose a hypothesis that could explain these…

A: Silent mutations occur when the single-nucleotide mutation of a single DNA within the genetic…

Q: In the replica plate experiment, it shows that mutations are random. However, certain environmental…

A: REPLICA PLATE EXPERIMENT The replica plate experiment is a laboratory technique used to study…

Q: The words “transcribe” and “translate” are more commonly associated with language and dialogue. For…

A: Molecular biology is the biology that deals with structure and function of macro molecules such as…

Q: Which of the following molecules can be considered a direct product of genes within a cell? O a.…

A: Genes are the functional segments of DNA.

Q: Which of the following statements about mutations are true? * Mutations are always passed down to…

A: Mutations are alterations that occur in the DNA sequences that are caused by mutagens. Mutagens may…

Q: You are working in a lab that studies stickleback fish. These fish normally have three spines that…

A: Mutations are changes in the DNA sequence of organisms which may or may not affect its phenotype.

Q: You are discussing with some of your bio major friends who have not taken Genetics and your non-bio…

A: The mutation is an alteration of the sequence of the genome. SNPs (Single nucleotide polymorphisms)…

Q: What the world looks like due to mutation?illustrate

A: The mutation causes during the process of replication, transcription, or translation due to…

Q: Comparing DNA sequences in different species indicates that more DNA segments that do not code for…

A: DNA contains lot of nucleotides and most of the DNA which do not codes for any functional product…

Q: Three proteins, A, B, C were found to evolve from an ancestral protein with a critical amino acid, X…

A:

Q: Archibald Garrod was an English physician who first proposed that genes encode enzymes. Like the…

A: Archibald Garrod’s main contribution is considered as his scientific theory of metabolic inborn…

Q: Your friend has discovered that the same human promoter is responsible for producing two different…

A: We have a biomolecule , that is our dna which have all the genetic information. It Ultimately makes…

Q: Molecular Biology is the Course RNAi is a commonly used lab technique to transiently reduce…

A: Biological origin:The RNAi system likely originated as a defense mechanism against viruses and…

Q: Gene Expression and the Central Dogma are what?

A: Introduction - Gene expression O Gene expression is the process by which information from a gene is…

Q: Which of the following statements about the differential expression of human genes is correct? A.…

A: The Human Genome Project states that genes in human vary greatly in size, ranging from a hundred DNA…

Q: If the effects of mutations 1 + 3 is an eye size intermediate between wild type and mutation 1…

A: In biology, a mutation is an alteration in the nucleotide sequence of the genome of an organism,…

Q: If a mutation in a homeotic gene produced the following phenotypes, would you expect it to be a…

A: Mutation refers to the sudden changes that occur in the sequence of DNA’s (deoxyribonucleic acid)…

Q: Many lethal genetic disorders such as CF, Huntington’s, sickle cell anemia, Tay Sach’s, etc.,…

A: Diseases are thought to persist in human populations primarily because of a balance between…

Q: What

A: Genomic imprinting:- A phenomenon in which expression of an allele in offspring depends on whether…

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.