Which of these is true about DNA? a. It can make precise copies of itself and affect the rate at which it is copied. b. It must have equal amounts of A, C, T and G. c. It tends to mutate in ways that promote fitness. d. Men have more of it than women do. e. None of the above is correct.

Q: Which statement is true about transposon? a. Transposon is known as a ‘jumping gene’. b.…

A: The science of genes and inheritance, or how particular characteristics or traits are transferred…

Q: If a mutation deletes the start codon in a eukrayotic gene, which of the following most accurately…

A: The start codon is a three-nucleotide long sequence in a gene that is responsible for the initiation…

Q: A key difference between the nucleotides found in DNA andthose in RNA is thata. DNA has phosphate,…

A: Deoxy ribonucleic acid (DNA) is he genetioc material of most organisms, while ribonucleic acid (RNA)…

Q: Horizontal gene transfer is a process in which genetic material from an organism is a. transferred…

A: Genes are the structural and functional units of heredity that carry coded genetic information in…

Q: Which of the following is correct regarding polytene chromosomes?    options:   A.  Exposure to a…

A: DNA contains inheritable segments that are called genes that contain instructions for protein…

Q: Mutations

A: With the improvement in technology, humans are now able to alter the basic features of an organism…

Q: RNA is different from DNA in which of the following ways?a. RNA is generally single-stranded.b. RNA…

A: DNA is a nucleic acid polymer which acts as genetic material in all living organisms.

Q: Changes in the environment are LEAST likely to have which of the following effects? A. altering…

A: Proteins are the functional product of a particular gene that are produced by the translation…

Q: Which of the following is not true of a single nucleotide polymorphism?a. It is usually caused by a…

A: Single nucleotide polymorphisms represents a difference in a single nucleotide. It occurs throughout…

Q: onsense mutations occur when:  A.The new codon causes an incorrect amino acid to code for an…

A: A mutation is a mistake within the deoxyribonucleic acid sequence of an associate organism.…

Q: Which of the following is FALSE about the human genome?      a. repetitive DNA is approximately…

A: The genetic makeup of every human being is 99.9% same. Differences in the 0.1 percent that is left…

Q: What is the major reason why the maize genome is much larger than the rice genome?a. Maize has more…

A: What is the major reason why the maize genome is much:

Q: Are mutations harmful?a. Yes, because the DNA is damaged.b. No, because changes in the DNA result in…

A: Mutations in biology is defined as a change in DNA sequence from normal sequence. Mutations can be…

Q: Which of the following may be detected using a karyotype?a. point mutationsb. a specific genetic…

A: Karyotype refers to a laboratory technique to produce an image of an individual’s chromosomes.

Q: A scientist is curious about the effects of diet on the gut length of spadefoot toad tadpoles.  She…

A: Tadpole  It is a stage in the life cycle og amphibians. Most of the tadpole live in the water and…

Q: Examining the DNA of a cancerous cell, a scientist would find strong expression of A. siRNAs. B.…

A: Option c i.e. oncogenes is the correct statement for the above question.

Q: What is the central dogma of molecular biology? a. DNA is the genetic material. b. Information…

A: Genetic material is nothing but the sequence of nucleic acids which is called as DNA. It contains…

Q: Which of the following statements best describes DNA and RNA? a. Both are found in chromosomes b.…

A: Introduction :- RNA stands for Ribonucleic acid. It is a nucleic acid that plays a crucial role in…

Q: A student reads that deer mice that migrated to the hills of Nebraska originally had dark colored…

A: Mutation is a sudden change in the sequence of base pairs resulting in altered phenotype.

Q: n the triplet code, which of the following is true?   A. Each DNA base codes for three proteins.…

A: During translation, triplet codon is a set of three nucleotides, which together help to recruit the…

Q: Which of the following is a good definiton of "mutation." A. A change in the nucleotide sequence…

A: Any alteration or change in the nucleotide sequence of DNA is called mutation and this causes…

Q: A nerve cell and a skin cell from the same person  have Group of answer choices A. different gene…

A: When fertilization occurs, the two cells ie the egg cells and the sperm cells fuse to form a zygote.…

Q: Which of the following is not a key property of hereditarymaterial?a. It must be capable of being…

A: Introduction  DNA serves as the main genetic material in various organisms be it prokaryotes or…

Q: Homologous recombination refers to the exchange of DNA segmentsthat area. similar or identical in…

A: Genetic recombination is a process in which exchange of genetic material occurs between 2…

Q: The most common source of DNA mutation is _____; however, these mistakes are typically corrected.​…

A: To understand the structure of nucleic acid, it is necessary to first understand the structure of…

Q: Two cells use the same segment of DNA to produce two different proteins. The mRNA transcribed by…

A: A gene is a DNA-based functional heredity unit that delivers instructions for the production of RNA…

Q: Which of the following is a/are false characteristic(s) regarding DNA? A.    DNA can be found in…

A: DNA is the genetic material which is responsible for transferring the genetic information from one…

Q: Biology The lab responsible for genotyping the hair color of the subject is taking forever. When you…

A: Single nucleotide polymorphism refers to the germline substitution at a particular position in the…

Q: A codon is a. one of three nucleotides that encode an amino acid. b. three nucleotides that encode…

A: DNA is transcribed into mRNA.  mRNA has codons which are translated into amino acids. Every codon…

Q: Protein synthesis is the process of building a phenotype from a genotype. In 100-200 words explain…

A: The DNA contain the genetic information in terms of their nucleotide sequence which is present…

Q: What happens to an organism (plant, animal, or microorganism) during genetic modification? A. Fewer…

A: Genetic engineering is a part of recombinant technology in which the gene is altered. A gene is a…

Q: 1. Stress can affect the epigenome of an individual. II. Depending on the affected site, epigenetic…

A: Stress can have a direct effect on DNA through the mechanism of epigenetics, which means 'on top of…

Q: Why are errors in DNA methylation so destructive to cells? a. They cause improper activation or…

A: ANSWER Why are errors in DNA methylation so destructive to cells? a. They cause improper…

Q: 1. Nutrigenomics is the study of how diet and gene expression interact throug molecular mechanisms.…

A: Epigenetic modifications are alterations in the genes without changing the exact or original DNA…

Q: Which of the following statements about coding strands of a gene is false? a. The sequence of the…

A: Coding strand is the DNA template whose nucleotide sequence is similar to the base sequence of the…

Q: Which of these occurs as we get older?a. Neurons replicate to replace lost neurons.b. Skeletal…

A: Aging is considered as the progressive physiological changes in an organism that lead to senescence,…

Q: Which gene type is INCORRECTLY matched with its type of genomic sequence? a. FRNA gene: moderately…

A: Answer: Genomic sequences = These are the sequences present in chromosomes which codes for a…

Q: Suppose a mutation affects an enzyme that is required to repair the damage to DNA caused by the loss…

A: A mutation is a change in the DNA sequence of a gene. Mutations can be caused by environmental…

Genetic Evolution

Sexual reproduction produces distinct population variations. Heredity determines the traits and qualities to be passed down to the progeny. Over time, this variation within-species is also affected by the process of human evolution. The study of how genetic variation leads to evolutionary changes is known as genetic evolution. If a trait helps an organism to survive and reproduce, it is more likely to be passed down the generations. It is rare that such traits result in a completely distinct set of traits in descendants than the ancestral population; this can result in the emergence of a new species.