heredity Flashcards
what is heredity?
the passing or mental characteristics genetically from one generation to another.
what is dominant trait?
a trait that will appear in the offspring if one of the parents contributes it. and is the most dominant trait in an offspring.
what is a recessive trait?
a trait that tends to be masked by other inherited traits.
what is a gene?
a gene in the basic physical and functional unit of heredity.
what is a alleles?
one of two or more alternative forms of a gene that arise by mutation and are found at the same place on a chromosome.
phenotype
was an American carpenter and sawmill operator, who on January 24, 1848 reported the finding of gold at Coloma, California, a small settlement on the American River about 36 miles northeast of Sacramento.
genotype
the genetic constitution of an individual organism.
probability
A number expressing the likelihood of the occurrence of a given event
meiosis
a type of cell division in sexually reproducing organisms that reduces the number of chromosomes in gametes
sex chromosomes
a type of cell division in sexually reproducing organisms that reduces the number of chromosomes in gametes
pedigree
A pedigree is a genetic representation of a family tree that diagrams the inheritance of a trait or disease though several generations
DNA
the hereditary material in humans and almost all other organisms
nucleotide
A nucleotide is one of the structural components, or building blocks, of DNA and RNA
mutations
A mutation is a change in the DNA sequence of an organism
