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Grade 8 CH 2

Traits and how they change

QuestionAnswer
The production of several species from one ancestral species. ADAPTIVE RADIATION
The different forms of a gene. ALLELE
Show their effect on the phenotype whenever they are present in the genotype. DOMINANT
The change in the genetics of a species over time. EVOLUTION
Occurs when the last individual of a species dies. EXTINCTION
Part of the DNA code on a chromosome. GENE
The study of heredity. GENETICS
The genes that an organism has—its genetic makeup. GENOTYPE
The process in which DNA changes result in new alleles. MUTATION
The adapted organisms are selected naturally to survive and increase in number. NATURAL SELECTION
The combination of genetic makeup and the environment’s effect on that makeup. PHEONTYPE
A tool used to help you understand and make genetic predictions. PUNNETT SQUARE
Alleles that show their effect on the phenotype only when two of them for a trait are present in the genotype. RECESSIVE
All of the features that an organism inherits. TRAIT
Created by: Bridgerdon
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