21-40a
21-40b
21-40c
21-40d
Extras from 81-100
100
growth of a population that multiplies by a constant factor at constant time intervals
What is exponential growth?
100
enzyme that makes the covalent bonds between the nucleotides of new DNA strands
What is DNA polymerase?
100
land area that receives less than 30 cm of rain per year
What is desert?
100
specific portion of DNA that varies among individuals
What is genetic marker?
100
process by which the introns are removed from RNA transcripts and the remaining exons are joined together
What is RNA splicing?
200
an individual's unique banding pattern on an electrophoresis gel, determined by restriction fragments of the person's DNA
What is DNA fingerprint?
200
descriptive of an allele in a heterozygous individual that appears to be the only one affecting a trait
What is dominant?
200
molecule responsible for inheritance; contains deoxyribose
What is deoxyribonucleic acid (DNA)?
200
specific location of a gene on a chromosome
What is gene locus?
200
consumer that eats secondary consumers
What is tertiary consumer?
300
tendency for alleles of genes on the same chromosome to be inherited together
What is genetic linkage?
300
two strands of nucleotides wound about each other; structure of DNA
What is double helix?
300
organism that has acquired genetic material artificially
What is genetically modified organism (GMO)?
300
general set of symptoms in people with trisomy 21
What is Down syndrome?
300
genetic element that moves from one location to another in a genome
What is transposon?
400
scientific study of changes in the species in a living community, often following a disturbance
What is ecology?
400
person trained to collect, analyze, and explain data about human inheritance patterns
What is genetic counselor?
400
technique for sorting molecules or fragments of molecules by length
What is gel elctrophoresis?
400
transcription and translation of genes into proteins
What is gene expression?
400
transcription enzyme that links RNA nucleotides together
What is RNA polymerase?
500
area where fresh water from rivers merges with salty ocean water; productive ecosystem
What is estuary?
500
mating of two organisms that differ in two characters
What is dihybrid cross?
500
diagram representing energy loss from one trophic level to the next
What is energy pyramid?
500
process of copying DNA molecules
What is DNA replication?
500
grassland with scattered trees; found in tropical regions of Africa, Australia, South America
What is savanna?
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