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Genetic Engineering
Genetic Engineering

... 2. Vectors transfer the donor DNA into the host a. mechanical vectors = Carry DNA into a cell, micropipette or metal bullet b. biological vectors = virus or bacterial plasmid (____small rings of DNA_____) 3. If host and foreign DNA have been cleaved by the same restriction enzyme, the ends can ___jo ...
Lecture 11 Speciation
Lecture 11 Speciation

... the forms which…come very near to, but do not quite arrive at, the rank of species. …A well-marked variety may therefore be called an incipient species. …From these remarks it will be seen that I look at the term species as one arbitrarily given. Darwin, The Origin of Species ...
Macroevolution
Macroevolution

Practice Exam 4, Biology 211, Fall 2007
Practice Exam 4, Biology 211, Fall 2007

... d. Evolution proceeds by slow changes in populations over many generations. e. The motivating force for change is natural selection. 19. Which of the following most accurately describes the meaning of the term macroevolution? a. The origin of the first microorganisms. b. The evolutionary record cons ...
VOCAB- Evolution
VOCAB- Evolution

... _____ The study of the history of the Earth, especially the Earth’s history as recorded in rock ...
variation
variation

... Müllerian mimicry: when two or more poisonous species, that may or may not be closely related and share one or more common predator, have come to mimic each other's warning signals. ...
BIOCHEMISTRY 4.1 HOMEWORK
BIOCHEMISTRY 4.1 HOMEWORK

... insert the fragment at a site that interrupts a selectable marker (such as the tetracycline-resistance gene of pBR322). The loss of function of the interrupted gene can be used to identify clones containing recombinant plasmids with foreign DNA. With a bacteriophage vector, it is not necessary to do ...
Learning Log 5
Learning Log 5

... guts of cows and colobus monkeys. They have protruding guts helping them store large amounts of food and we have found they also have similar digestive systems and diets. This shows that convergent evolution can happen between seemingly unrelated species. Discovery of this phenomenon is significant ...
No Slide Title
No Slide Title

The scientist is not a person who gives the right answers, he`s one
The scientist is not a person who gives the right answers, he`s one

Evidence of relationships between organisms
Evidence of relationships between organisms

... • Over time the new species will accumulate more differences in its DNA. • Therefore we would expect species that are more closely related to have more similarities in their DNA. ...
BIOLOGICAL EVOLUTION – UNITY AND DIVERSITY
BIOLOGICAL EVOLUTION – UNITY AND DIVERSITY

... Analyze and interpret data, using the principles of natural selection, to make predictions about the long term biological changes that may occur within two populations of the same species that become geographically isolated from one another. H.B.5C.2. Construct scientific arguments using data on how ...
WG GES proposals for amendment
WG GES proposals for amendment

Answers to Gene technology exam 2011-10-18
Answers to Gene technology exam 2011-10-18

... plate- Colonies that are not visible on agar-Amp plate (but on the tetracycline plate) will have the insert. b) Religation of the vector without any insert or that the restriction enzyme did not work. c) For expression of genes the gene can be inserted in wrong direction, also the vector can more ea ...
of species diversity
of species diversity

... • Compare the meaning of the terms species biodiversity and species richness. • Explain why it is useful for ecologists to calculate a species diversity index. • Compare the index of species diversity in natural and agricultural ecosystems. Explain the differences. • Summarise the changes in farm pr ...
Diapositive 1
Diapositive 1

chapter 24 speciation
chapter 24 speciation

... 3. Temporal Isolation - Species that breed during different seasons or times of the day. Includes flowering times for plants which vary widely. 4. Mechanical Isolation - Anatomically incompatible reproductive parts makes impossible the interbreeding of some plants and animals. Lock and key mechanism ...
Document
Document

... alphabet. Even with just four letters, the DNA alphabet spells out all of the information you need to create new cells and to stay healthy. The order of the DNA bases is called the sequence. Just like the order of the letters in a sentence, the sequence of the bases in DNA can spell all the instruct ...
9^Wd][i" ]h[Wj WdZ icWbb
9^Wd][i" ]h[Wj WdZ icWbb

... mountain range or desert which divides a population, but there are also some non-geographic means. For example, if one group of animals within a population gradually evolve a different mating season, eventually a separate species could evolve even though the population is still in one geographical a ...
Chapter 18
Chapter 18

... Seven levels ...
Evidence from Biology
Evidence from Biology

... evolution in DNA sequences. • DNA – deoxyribose nucleic acid is the hereditary material that determines which characteristics are passed on to the next generation. • Each DNA molecule contains many different genes that provide the instructions for traits such as eye colour or hair colour. ...
Speciation and Extinction
Speciation and Extinction

... • Cephalopod molluscs  teleost fishes • Dinosaurs & reptiles  birds and mammals • Species are eliminated or supplanted in their lineages ...
Who am I?
Who am I?

Biology 4.24 Evolution Within a Species
Biology 4.24 Evolution Within a Species

... • Each mitochondrion contains 2 to 10 mtDNA molecules and each cell has several hundred mitochondria… so many copies of mtDNA (and genes that it carries) are present in each cell. In contrast to only two copies of each autosomal chromosome in each somatic cell. ...
Classification of Organisms
Classification of Organisms

... Modern criteria for classification The changing classification system Biodiversity and total species ...
< 1 ... 155 156 157 158 159 160 161 162 163 ... 173 >

DNA barcoding

DNA barcoding is a taxonomic method that uses a short genetic marker in an organism's DNA to identify it as belonging to a particular species. It differs from molecular phylogeny in that the main goal is not to determine patterns of relationship but to identify an unknown sample in terms of a preexisting classification. Although barcodes are sometimes used in an effort to identify unknown species or assess whether species should be combined or separated, the utility of DNA barcoding for these purposes is subject to debate.The most commonly used barcode region, for animals, at least, is a segment of approximately 600 base pairs of the mitochondrial gene cytochrome oxidase I (COI).Applications include, for example, identifying plant leaves even when flowers or fruit are not available, identifying insect larvae (which may have fewer diagnostic characters than adults and are frequently less well-known), identifying the diet of an animal, based on its stomach contents or faeces and identifying products in commerce (for example, herbal supplements, wood, or skins and other animal parts).
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