Heredity Flashcards
science
Phenotype
observable traits
Genotype
name of the alleles
Heredity
traits that are passed on from parents to offspring
Gene
segment of DNA that codes for a particular trait
Alleles
variety of the same gene as in dimple or not dimple
Offspring
babies
Traits
characteristics
Sexual Reproduction
requires male and female gametes to produce offspring
Asexual reproduction
does not require male and female gametes to produce offspring
Mitosis
cells division that results in two identical daughter cells
meiosis
cell division that produces sex cells, each cell is unique
DNA
located in the nucleus of a cell; it is a genetic material
Probability
a chance
Gametes
sex cells
Punnett square
diagram showing how male and female alleles might combine in offspring
Fertilization
the process by which sperm and egg combine to form an offspring
zygote
a fertilization egg
recessive
a gene that is expressed only when there are 2 copies of the same alleles
Homozygous Recessive
2 copies of the same recessive alleles
dominant
a gene that is expressed either with 1 or 2 copies of the alleles
homozygous dominant
2 copies of the same dominant allele and one recessive alleles;ie..Tt,Gg,Ff
heterozygous
a mixed gene with one dominant allele and one recessive allele
Gregor Mendel
father of genetics.he experimented with pea plants
cross pollination
the crossing of gene between two flower; done by insects, human winds