biology vobab geneeeeeeeeeeeeees Flashcards
Genetics
the genetic properties, features, and characteristics of an organism.
Fertilization
The fusion of male gametes and female gametes to form a new organism.
Trait
A characteristic of an organism determined by genes (not just visible).
Hybrid
The product of two different species reproducing.
Gene
A unit of heredity which is transferred from a parent to offspring and is held to determine some characteristics of offspring.
Principle of Dominance
The principle states that when two different alleles are present in an organism, only the dominant allele will be expressed.
Allele
A variant form of a gene that is located on a particular spot on a DNA molecule.
Segregation
Principle that states that the two alleles for each trat separate during gamete formation and combine randomly during zygote formation.
Probability
Percent chance of offspring being born with a specific trait.
Phenotype
Visible characteristics caused by genetics
Homozygous
Possesses two of the same allele (2 dominant, or 2 recessive)
Heterozygous
Possesses one dominant allele and one recessive alle.