Genetics Key Terms
Terms in this set (24)
law of independent assortment
Mendel's law that states there is a random distribution of the pairs of genes on different chromosomes.
law of segregation
Mendel's law that states that the pairs of homologous chromosomes separate in meiosis so that only one chromosome from each pair is present in each gamete
Chromosomes with matching information
A haploid cell such as an egg or sperm. Sex cell.
1 set of chromosomes (half the "normal" number) GAMETES
2 sets of chromosomes - the normal number - SOMATIC/BODY CELLS
Scientific study of heredity - or the passing of traits from parent to offspring
Describes a trait that overpowers, or dominates, another form of that trait.
An allele that is masked when a dominant allele is present
A characteristic that an organism can pass on to its offspring through its genes.
An alternative form of a gene. You receive one from each parent.
two of the SAME allele
two DIFFERENT alleles
An organism's genetic makeup
An organism's physical appearance, or visible traits.
We see BOTH phenotypes with a heterozygous genotype
The third phenotype produces a mix or blend with a heterozygous genotype
Father of Genetics; bred pea plants
homozygous recessive genotypes
aa, bb, dd, ee, ff, gg
Homozygous dominant genotypes
HH, MM, PP, RR, TT, GG
Aa, Dd, Ee, Ff, Hh, Ll
Cross or mating between organisms involving TWO traits
A cross between individuals that involves ONE traits
The dominant allele completely masks the effects of the recessive allele