Heredity and Evolution Adaptations and Evolution

the theory that all species are descended from common ancestors who have changed over time by means of natural selection 

• Adaptations 
•  Mutation
• Theory of Evolution
• Speciation

inherited trait that increases an organism’s chance of surviving in a environment long enough to pass on its genes   

• Adaptations 
•  Mutation
• Theory of Evolution
• Speciation

random change in an organism’s DNA; can have positive, negative, or neutral effects on the organism 

• Adaptations 
•  Mutation
• Theory of Evolution
• Speciation

the process of one species developing into two or more species that can no longer mate 

• Adaptations 
•  Mutation
• Theory of Evolution
• Speciation

process by which the individuals best adapted to their environment tend to survive and pass their traits to subsequent generations   

• Adaptation
•  Mutation
• Natural Selection
• Speciation

the basic unit of heredity carried by the chromosomes; codes for proteins which determine the traits of an organism 

• Heredity
• Variation
• Gene
• Speciation

the range of expression of a trait within a population 

• varitation
• gene
• chromosome
• speciation

What is the probability that two people who carry the recessive allele but do not show it (Hh) will have a child that suffers from the recessive trait? (hh)

• 100%
• 25%
• 75%
• 50%

Mutations are

• random
• planned
• always predictable

Mutations can be passed down

• true
• false