Genetics DNA Technology Evolution Potpourri DNA & PS
Having two different alleles for a trait EX Tt is called this
HETEROZYGOUS
Traits that have a bell curve of phenotypes (not just two or three) EX/ skin color, IQ, birth weight
POLYGENIC
How many chromosomes does a normal human have?
46
Where would you expect genes that assort independently to be found?
ON DIFFERENT CHROMOSOMES
If an organisms haploid number is 20, what is it’s diploid number?
40
What enzyme is used to add new DNA nucleotides to the new strands of DNA during DNA replication?
DNA POLYMERASE
Which kind of RNA brings the copy of the gene from the nucleus to the ribosomes for protein synthesis?
mRNA
Information in the cell goes from DNA RNA to what?
PROTEIN
If a DNA sample contains 13% Adenine, how much Guanine would it contain?
37%
This is where transcription takes place
NUCLEUS
In this process, external DNA is incorporated into a cell.
TRANSFORMATION
This process uses chopped up DNA in a gel to determine paternity or solve a crime
DNA FINGERPRINTING
DNA created by combining DNA from more than one source
RECOMBINANT DNA
These “molecular scissors” are used to cut up DNA into smaller pieces
RESTRICTION ENZYMES
Changing the sequence of DNA of an organism
GENETIC ENGINEERING
All of the genes in a population of organisms
GENE POOL
Body parts that once were useful but no longer are (EX/remnants of 3 rd eyelid & appendix in humans)
VESTIGIAL STRUCTURES
Genetic drift tends to occur more frequently if a population is this
SMALL
Natural selection acts upon these
PHENOTYPES PRESENT IN A POPULATION
When two species adapt and evolve in response to one another (EX/Bees and flowering plants)
COEVOLUTION
The two-word naming system developed by Linnaeus
BINOMIAL NOMENCLATURE
Using binomial nomenclature, which word gets capitalized?
GENUS ex/ Felis domesticus (Genus) (species)
Selection that favors the average phenotype (pressure against two extremes)
STABILIZING
Failure of chromosomes to separate during meiosis
NONDISJUNCTION
Genes contain the instructions for building these:
PROTEINS