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 particular trait.
gene
variety of the same gene as in dimple or not dimple
alleles
babies
offspring
characteristics
traits
requires male and female gametes to 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 a genetic material
DNA
a chance
probability
sex cells(egg or sperm)
gametes
diagram showing how male and female alleles might combine in offspring
punnett square
the process by which sperm and egg combine to form an offspring.
Fertilization
a fertilized egg (2 haploids joined together)
Zygote
a gene that is expressed only when there are 2 copies of the same alleles
Recessive
2 copies of the same recessive alleles
Homozygous Recessive
a gene that is expressed either with 1 or 2 copies of the alleles
dominant
2 copies of the same dominant alleles
homozygous
a mixed gene with one dominant allele and one recessive alleles.
heterozygous
father of genetics he experimented with pea plants
Gregor mendel
the crossing of gene between two flowers done by insects,human,winds)
cross pollination
the crossing of genes between two animals of the same species human involve in the breeding to select desired traits.
cross breeding
a pure homozygous dominant or homozygous reessive
purebred
a mixture of two gene one dominant and one recessive
hybrid
