3A meiosis Flashcards
genes
unit of heredity
inheritance/heredity
the passing of traits from parent to offspring through genes
traits
characteristics
alleles
a variant form of a gene with individuals inheriting two alleles for each gene, one from each parent, that determine specific traits like eye color
genotype
the combination of alleles an individual has
phenotype
observable traits resulting from genotype
homozygous
having 2 identical alleles
heterozygus
having 2 different alleles
Law of Segregation
during the formation of gametes (sex cells), the two alleles for a trait separate, so that each gamete carries only one allele for each trait.
Law of independent assortment
during gamete formation, different pairs of alleles (for different traits) segregate independently of each other, meaning the inheritance of one trait doesn’t influence the inheritance of another.
Law of dominance
in a heterozygous condition, one trait (the dominant trait) will mask the presence of another trait (the recessive trait) for the same characteristic
true breeding
organisms that, when bred with others of the same type, consistently produce offspring with the same traits, indicating they are homozygous for those traits.
cross breeding
Crossbreeding is the mating of animals or plants from different breeds or varieties within the same species to produce offspring with a combination of traits from both parents
P generation
parent
f1 generation
1st offspring
f2 generation
2nd offspring