The study of the passing of traits from parent to offspring.
Genetics
Why are siblings similar but not exactly the same?
They inherit a unique set of chromosomes from each parent.
What is the percent chance that offspring will inherit a homozygous recessive genotype if both parents are heterozygous for the trait?
25%
When a creature inherits two dominant alleles for a trait and they both show up in the phenotype, such as one red eye and one green eye, this is what type of inheritance?
Codominance
How many alleles does an organism inherit from each parent?
1
Black labs (dominant fur color) can still have yellow puppies (recessive fur color) under what conditions?
Both parents carry the recessive allele in their genotypes
Describe the genotype of the offspring of a cross between a homozygous dominant parent and homozygous recessive parent?
All will be HETEROZYGOUS
Organisms inherit two possibilities for each trait, one from each parent. This combination of genes is its:
Genotype
An organisms traits are caused by its genotype. The effect is the organisms:
Phenotype
How many chromosomes do human gametes have?
23
The ability to survive in the environment and reproduce and pass genetic material to the next generation.
Survival of the Fittest
A group of organisms of the same species that can produce fertile offspring and are in the same area.
Population
A process by which organisms with favorable traits produce more successful offspring than organisms with less favorable traits, causing the favorable traits to become more common in the population.
Natural Selection
Improvement of a trait or function through natural selection.
Adaptation
Organisms of the same species at the same level of descent from a common ancestor:
Generation
A characteristic of an organism:
Trait
