science 2n n 2 2 2 2 2 2 2 2 2 Flashcards
heredity
the passing of traits fromparents to offspring
dominant trait
the trait observed in the first generation when parents that have different traits are bred
recissive trait
a reapers in the second generation when parents with different traits are bred
genes
one set of instructions for an inheroditary
allele
different forms of a gene dominant or recissive
phenotype
an organisms apperance or other dectible characteristics
genotype
the combination of genes for one or more traiats
meiosis
a cell that reduces chromosomes for sexually reproducing organisms
sex chromosomes
chromosome that decides the sex of an organism
pedegree
the record of ansestery
dna
carrier of genetic information
nucleotide
structural uni such as acid from dna
mutation
a change in nucleoic acid in the genome of an organism
rna
a nucleoic acid is present in all cells that need structure similar to dna
probability
probable or most probable envent