heredity Flashcards
the passing of genetic traits from parents to off spring
Heredity
the trait observed in the first generation when parents that ave different traits are bred
Dominate trait
a trait that is apparent only when two recessive alleles for the same characteristic are inherited
Recessive trait
one set of instructions for an inherited trait
Genes
one of the alternate forms of a gene that governs a characteristic, such as hair color.
Alleles
an orgasm’s appearance or other detectable charactristic
Pheneotype
the entire genetic makeup of an orgasm also the combination of genes for one or more specific trait
Genotype
the likelihood that s possible future event will occour in any given instance of the event
probablity
chromosomes that have the same sequence of genes and the same sculputre
homologous chromosomes
a process in cell division during witch the number of chromosomes decreases to half the original number by two divisions of the nucleus which results in the production of sex cells
Meiosis
one pair of chromosomes that determine the sex of an individual
sex chromosemes
a diagram that shows the occurrence of s genetic trait in several generations of a family
pedigree
deoxyribonucleic acid, a molecule that is present in all living cells and contains information that determines the traits that all living things inherit and needs to live
DNA
in a nucleic acid chain a subunit that consists of a sugar a phosphate and a nitrogenous base
Nucleotide
ribonucleic acid a molecule that is present in a ll living cells and that plays a role in protein production
RNA
