heredity Flashcards
observable traits
phenotype
name of the alleles
genotype
traits that are passed on from parents to offspring
heredity
segment of DNA that codes for a pareticular traits
genes
variety of the same genes as in dimple or not dimple
alleles
babies
offspring
characteristics
traits
requires male and female gametes t produce offspring
sexual reproduction
does not require male and female gametes to produce offspring
asexual reproduction
cell division that results in two identical daughter cells
mitosis
cell division that produces sex cells, each cell is unique ( different from one another )
meiosis
located in the nucleus of a cell: it is genetic material
DNA
a chance
probabillity
sex cells ( eggs or sperm)
gametes
diagram showing how male and female alleles might combine in offspring
putnett square
the process by which sperm and eggs combine to from an offspring
fertillization
a fertillized eggs ( 2 haploids joined together)
zygote
a gene that is expressed only when there are 1 or 2 copies of the alleles (ff)
recessive
2 copies of the same recessive alleles ( small latter : gg, ff)
homozygous dominant
a gene that is expressed either with 1 or 2 copies of the alleles
dominant
2 copies of the same dominant alleles ( big big latter: ie… TT, Gg, FF)
homozygous dominant
a mixed gene with one dominant allele and one recessive allele: ie.. Tt, Gg, Ff)
heterozygous
father of genetics. he experimented with pea plants
gregor mendel
the crossing of genes between two flowers : done by insects, human, winds)
cross pollination