the passing of physical characteristics from parent to offspring
the scientific study of heredity
a different form of the same characteristic ex.blue or brown eyes
the part of the DNA that controls a particular trait
condensed threads of DNA in the cell nucleus that carries the genes like beads on a string
the different forms of a gene
the allele combination for a trait
the physcial appearance for a trait
an allele that you need only one of to have the trait (Capital letter)
an allele that you must have 2 of to have the trait (lowercase letter)
plant that has shown the same characteristics for many generations
having 2 different alleles; same as hybrid
a chart that shows all th possible combinations of alleles for a genetic cross
a process of cell division in which the number of chromosomes is reduced by half to make sex cells
a cell from either parent that contains half the DNA
DNA and RNA work together to make proteins
Where the production of protein occurs
on a ribosome in the cytoplasm
single stranded nucleic acid that comes in 2 forms: messenger and transfer
double stranded nucleic acid in the nucleus that contains genes
when neither allele is dominant, so both traits are expressed
where Charles Darwin travelled and saw finches
Origin of Species
book written by Charles Darwin
the idea that individuals that are better adapted to their environment are more likely to survive and reproduce than other members of the same species
3 factors that affect natural selection
1. overproduction 2. variation 3. competition
form when organisms die and are buried by sediment
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