Download Mendel's Principles of Inheritance: Terms and Concepts and more Quizzes Genetics in PDF only on Docsity!
Define Heredity
genetic transmission of info between generations TERM 2
Define trait
DEFINITION 2 inherited characteristics physical or behavioral TERM 3
Define hybrid
DEFINITION 3 offspring of a parent genetically different TERM 4
Define cross
DEFINITION 4 breeding of 2 individuals TERM 5
Who is Mendel?
DEFINITION 5 proposed the particulate theory of heredity hereditary info is passed through generation as packages of into (particles) particles = genes genes are not changed and can reappear mendel discovered herdity by breaking peas
What is the blending theory and who
disproved it?
early belief that offspring have traits that are a blend of their parents and that their parents traits will not ever be made again traits are permanently lost in ahybrid Mendel disproved TERM 7
What is monoecious?
DEFINITION 7 they have both male and female reproductive organs ex) pea plants TERM 8
What is dioecious?
DEFINITION 8 plants with separate reproductive organs cannot self-fertilize TERM 9
Female flower
DEFINITION 9 pistil: has ovary, style and stigma Ovary: expanded basal portionStyle: elongated sectinStigma: apical structure that receives pollen TERM 10
Male flower
DEFINITION 10 stamen: filament and anther Filament: stalk-like portionAnther:makes pollen
Define homozygous
Alleles are identical ex) AA, aa pure-line plants TERM 17
Define:
DEFINITION 17 parent generation: genotype of O parents used in cross f1 gen: offspring of crossing parents f2 gen: offspring produced from crossing two f1 gens law of segregation: maternal and paternal alleles for a trait separate during gamate formation and then reunite during fertilization TERM 18
What is a test cross?
DEFINITION 18 a cross between an individual of an unknown genotype with an individual that is homozygous recessive used to determine if the parent genotype is TT or Tt TERM 19
What is the law of independent assortment?
DEFINITION 19 during gamete formation, the alleles for different traits segregate independently of one another mendel developed this law by using dihybrid crosses TERM 20
What are dihybrid
crosses?
DEFINITION 20 a breeding experiment b/t the P gen that differ in two traits
What are dihybrid test
crosses?
a two character test that will also produce predictable phenotypic ratios in the F allows one to determine the genotype of an organism when the phenotype is used use homozygous recessive
