Chapter 4 Sec. 1 Flashcards
Heredity
The passing of physical traits from parents to offspring
Genetics
The study of heredity.
Trait
Each different Form of characteristic
Fertilization
A new organism begins when egg and sperm join together
Purebred
Offspring of many generations of the thing
Alleles
Different form of gene
Gene
Factors that control a trait
Dominant allele
Shows up when Allene is present
Recessive Allele
Does not show if dominant Allene is there
Hybrid
Two Alleles for a trait
Probability
Predict the results of a future event
Punnett square
Chart that shows combinations of alleles
Homozygous
Two identical alleles
Heterozygous
Different alleles
Phenotype
Physical paper appearance
Genotype
Brain makeup
Meiosis
When chromosomes number is reduced by half to form sex cells
Messenger RNA
Carries DNA info.
Transfer RNA
Carries amino acid and stuff
Mutation
Produces incorrect protein so the gene is different than what it should’ve been
Replication
The process where a cell divides and copy’s DNA
Heridy
The passing of traits from parents to offspring
Codominance
A condition where neither of the alleles of a gene is dominant or recessive