heredity Flashcards
Heredity
The passing of genetic traits from parent to offspring
Dominant Trait
the trait observed in the first generation when parents
that have different are bred
DNA
a molecule that is present in living cells and that contains the info
Genes
one set of instructions for an inherted trait
Alleles
one of the alternative forms of a gene that goverens a
characteristic such as hair color
Phenotype
. an organism’s apprence or other detectible charastic
Genotype
.the entire gentic makeup of an organism
Probability
.the likely hood that a possible future event will occer
Homologous chromosomes
.chromosomes that have the same squence of genes and structer
Meiosis
.a process in cell division during which the number of chromosomes decreases to half the orginal number by 2 divisions of the nuclues which results in the prodition in sex cells
Sex chromosomes
.one pair of chromomes that determine the sex of an indival
Pedigree
.a digagram that shows the occerance of an genetic
in several generations of the family
Recessive Trait
.a trait that is opperant only when 2 recisive alleles for the same charists are inherided
Nucleotide
.in a nucleic-acid chain, a subunit that consists of a suger, a phsphate, and a nitrogenous base
RNA
.a molecule that is present in all living cells and that plays a role in protein production
Mutations
.a change in the nucleotde-base sequence of a gene
DNA molecure
