What do you think might be some of the problems associated with isolating and sequencing DNA from ancient samples, such as that of the 4000-year-old Saqqaq man from Greenland?

Q: What are the big differences between eukaryotic (nuclear) and prokaryotic genomes?  How do…

A: Genes are the basic structural and functional unit of heredity. They carry coded genetic information…

Q: You compare two strands of mtDNA and discover that there are 3 differences in base pairs between…

A: The mitochondrial DNA (mtDNA) is uniparental in nature and it is transferred from mother to daughter…

Q: what would you expect to find in a metagenomic library ? (check all that apply) A.   peer reviewed…

A: Metagenomic libraries are beneficial for exploring microbial diversity in unculturable systems, and…

Q: You have managed to create a personal PCR fragment containing a human olfactory receptor gene in an…

A: So the problem could be solved using a technique known as polymerase chain reaction (PCR) Polymerase…

Q: There are four possible observations that suggest an error occurred in a PCR reaction: a) Sequence…

A: PCR reaction is a method used to amplify a small sample into millions of small ones which help the…

Q: The plots above show the distribution of SNP alleles similar to Neanderthal genomes, in two ancient…

A: ANSWER : The statement that is NOT consistent with the data is:A) The maternal grandmother of…

Q: How does DNA profiling make use of genetic variation in DNA sequences

A: DNA profiling is also called DNA fingerprinting.

Q: Now that cloning is possible, should it be used to clone animals that are near extinction? What are…

A: Cloning may help preserve those species, which are endangered today but it should not be a process…

Q: Humans and chimpanzees share about 98% of their DNA. What is DNA? What might be the role of…

A: DNA Structure and Function:DNA, or deoxyribonucleic acid, is composed of nucleotides, which consist…

Q: Advances in biotechnology have revolutionized the study of ancient remains. In Ötzi's case, a…

A: Biotechnology is a broad category of current technologies that employ vital organs, cells, or parts…

Q: What bioinformatic tools can be used to extract mitochondrial DNA from raw whole genome sequence…

A: Bioinformatics is the use of biological data with computing techniques. It was established in 1990.

Q: What information can researchers gain by comparing the human and chimpanzee genome sequences?

A: The sequence of DNA nucleotides, or bases, in a genome—the order of As, Cs, Gs, and Ts that make up…

Q: DNA profiling has been used to verify pedigrees of valuable animals such as show dogs, racing…

A: Eukaryotic genomes contain a significant amount of repetitive DNA that does not code for proteins. A…

Q: Why was noncoding DNA previously called 'junk DNA' and why is the term no longer considered…

A: Deoxyribonucleic acid is a molecule composed of two polynucleotide chains which coil around each…

Q: Given that you start with 20 copies of double-stranded DNA prior to running PCR, how many copies…

A: The polymerase chain reaction (PCR) is an in vitro technique for producing numerous copies of a…

Q: DNA is isolated from concentrated ocean water. One genome is studied, and the proportion of each…

A: DNA is made of of pentose sugar, nitrogenous base, phosphate group which forms a nucleotide and each…

Q: The genome size of humans and chimpanzees are both approximately 3 billion base pairs, sharing about…

A: It is the process whereby an organism better adapts to their environment tend to survive and produce…

Q: how can genomes with a relatively small number of genes produce the vast complexity of phenotypes…

A: The human nuclear genome is simple but a complicated structure. The genome incorporates 3.2 billion…

Q: What is comparative DNA?

A: I think the question was supposed to be about comparative genomics rather than DNA. I am answering…

Q: Why are human and chimpanzee DNA 96 percent similar? Please choose the best option. a) Both groups…

A: The similarities between the two species is primarily due to the DNA sequences. It is the DNA…

Q: Before the advent of recombinant DNA technology, why was it so diffcult for geneticists to map human…

A: why was it so diffcult for geneticists to map human genes using pedigrees? The limitations to the…

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.