Shared Flashcard Set

Details

Genetics CH 1
Intro to Genetics
19
Biology
Undergraduate 2
08/29/2010

Additional Biology Flashcards

 


 

Cards

Term
What is genetics?
Definition
the science of heredity
Term
What are the 3 actions of all organisms regarding genetics?
Definition
all organisms store, copy and transmit info to the next generation
Term
What is DNA?
Definition
the set of instructions to develop, reproduce, and survive in the environment
Term
What is a genome?
Definition
the complete set of genetics instructions for any organism (both coding and non-coding)
Term
What is a gene?
Definition
regions of DNA encoding a piece of info
Term
What are model organisms?
Definition
organisms with characteristics that make them useful for genetic analysis
Term
What are 3 common characteristics of model organisms?
Definition
1) short generation time (reproduce quickly)
2) large but manageable number of progeny (allows us to look at variation)
3) adaptable to lab environment (can be housed and propagated inexpensively)
Term
What are the six model organisms and their scientific names?
Definition
1) Fruit fly=Drosophila melanogaster
2) Bacterium=Escherichia coli
3) Roundworm=Caenorhabditis elegans
4) Thale cress plant=Arabidopsis thaliana
5) House mouse=Mus musculus
6) Baker's yeast=Saccharomyces cerevisiae
Term
What do gene families arise from primordial genes through?
Definition
duplication and rearrangements
Term
What can duplication and divergence of new genes generate?
Definition
genes with new functions
Term
What is the Systems Approach?
Definition
an approach that has been formed by the shift of focus of genetics from analysis of single genes and proteins to entire networks and how the systems integrate with each other
Term
What are the 4 bases that are the nucleotide building block of DNA?
Definition
guanine, adenine, thymine, and cytosine
Term
What does the order of nucleotide sequences determine?
Definition
which proteins are synthesized as well as when and where the synthesis occurs
Term
What are the units of package cells that contain DNA called?
Definition
chromosomes
Term
How many base pairs does the human genome have?
Definition
20,000-30,000
Term
What kind of structure do proteins have?
Definition
3 dimensional
Term
What does the order of amino acids determine?
Definition
the type of protein and its structure
Term
What are the 3 divisions of genetics?
Definition
1) transmission genetics
2) molecular genetics
3) population genetics
Term
What is the history of genetics?
Definition
1) Hindu
2) Greeks
3) Pangenesis
4) Inheritance of acquired characteristics
5) Aristotle
6) Romans
7) R. Hooke
8) Preformation
9) Blending inheritance
10) N. Grew
Supporting users have an ad free experience!