Heredity Flashcards
the passing on of physical or mental characteristics genetically from one generation to another
Heredity
a trait that will appear in the offspring if one of the parents contributes it
Dominant Trait
The unit of heredity of all organisms is called a gene, and it can have many different versions called alleles
Recessive Trait
a unit of heredity that is transferred from a parent to offspring and is held to determine some characteristic of the offspring
Genes
one of two or more alternative forms of a gene that arise by mutation and are found at the same place on a chromosome
Alleles
the set of observable characteristics of an individual resulting from the interaction of its genotype with the environment
Phenotype
the genetic constitution of an individual organism
Genotype
the extent to which something is probable; the likelihood of something happening or being the case
Probability
A pair of chromosomes that contain the same gene sequences, each derived from one parent
Homologous chromosomes
a type of cell division that results in four daughter cells each with half the number of chromosomes of the parent cell, as in the production of gametes and plant spores
Meiosis
a chromosome involved with determining the sex of an organism, typically one of two kinds
Sex chromosomes
the record of descent of an animal, showing it to be purebred
Pedigree
a self-replicating material present in nearly all living organisms as the main constituent of chromosomes
DNA
a compound consisting of a nucleoside linked to a phosphate group
Nucleotide
a nucleic acid present in all living cells
RNA
