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CH. 16 GENETICS (Mutations Gene-Mutation-300x213 (Point Mutation (small…
CH. 16 GENETICS
Mutations
change in DNA
Point Mutation
small change that affects small amount of DNA
almost always harmful
lethal
kills
Monohybrid Crosses
only one trait/characteristic studied
CROSS
sexual reproduction in 2 individuals
selfing
DNA Repair
can recognize & repair mutations
can't be too efficient
can be affected by mutations in DNA Repair Genes
Other Aspects of Inheritance
biparental inheritance
maternal inheritance
Sexual Reproduction
Asexual Reproduction
offspring arise from single organism
no gamete fusion
Allele combination from 2 organisms
better adapted individuals
weeds out dud qualities
Replication
DNA replicates in "S Phase"
DNA doubles
Dihybrid Crosses
2 genes are studied
Multiple Genes for One Character
one trait may "mask" or take over another
Phenotype
"characteristic"
Genotype
"name"
Punnet Square
