Genes
T/F: Most of the DNA in our bodies codes for a trait
False!
_________________ a specific characteristic or attribute of an organism
________ are the smallest unit of life.
Cells
The scientific study of the interactions that determine the distribution and abundance of organisms
What is ecology?
______ is the result of frequency of alleles changing
evolution
The appearance of a character or set of characters is called an organism's __________________
phenotype
a genotype in which the members of a pair of alleles are different, is said to be ____________
heterozygous
A pride of lions an example of what level of biological organization?
Population
List 3 abiotic factors that can influence ecology
sun, acidification, water, win, oxygenation, access to minerals etc
_____________ occurs when one allele (or combination of alleles) makes an organism more or less fit in terms of survivability and reproductive output in a given environment
Natural Selection
Different forms of a particular gene are called _________
What is an allele?
A ___________________ is the specific, fixed position on a chromosome where a particular gene or genetic marker is located
Locus
True or false: African elephants and indian elephants are part of the same population
False
This level of ecology includes physiological and behavioral ecology and studies interactions between individuals and their environment
Organismal ecology
Evolution via __________ changes in allele frequencies due to chance events
Genetic Drift
Describe the central dogma of molecular biology
DNA is transcribed to mRNA which is translated into proteins
The phenotypes of F1 hybrids is somewhere between the phenotypes of the 2 parental varieties in this type of dominance
What is incomplete dominance?
This level of organization is a group of organisms that are different species in the same location and point in time
Community
Ecosystems are a product of ___________ of species
evolution
__________ involves the movement of alleles into or out of a population
Gene Flow
Name the four monomers of DNA
Adenine, thymine, guanine and cytosine
A _____________________ is a sequence of three nucleotides in a DNA or RNA molecule that corresponds to a specific amino acid or stop signal
Codon
Fill in the blanks: cells, _________, __________, organ system, __________
tissues, organs, organisms
T/F: Ecological systems are often in equilibrium
false!
What factors influence phenotypes?
Genotype (genetics) and environmental influences