This is the expression of the genotype.
Phenotype
This is when nature favors the extreme phenotypes, rather than the average, and two or more species may form.
What is disruptive selection?
This is the relationship between two species in which one hunts another to eat it.
predatory / predation / predator-prey
These carry blood away from the heart.
arteries
This is the word for the place/environment in which an organism lives.
habitat
This is when two alleles are both clearly expressed in the heterozygous genotype.
Co-dominance
The peacock display is an example of this, which is when vibrant males attract choosy females.
What is sexual selection?
This is the term for when two species are in a relationship in which both species benefit.
mutually beneficial
Capillaries are tiny and only allow blood cells to move in single file. Capillaries are this small to increase this.
Surface area
This is the person who wrote On the Origin of Species
This is what you call a variant of a gene.
allele
This is one of the 4 principles of natural selection in which you must be successful in reproducing.
What is fitness?
The role an organism plays in its environment, which includes its interactions with all biotic and abiotic factors.
These veins deliver blood to the right atrium.
Superior and inferior vena cava
True or False: nature changes species with intention
FALSE!!
This is the term for two of the same allele in the genotype.
homozygous
These features of different species are similar in function but not necessarily in structure and which do not derive from a common ancestral feature.
What are analogous structures?
This is the kind of growth curve in a population when there are no limits placed on the population; also known as the J-curve
logistical growth
This is the liquid part of the blood that does not contain blood cells.
plasma
These are what cause physical changes in genes.
mutations
This Law describes when alleles separate and each gamete gets one copy.
Law of Segregation
This is when species evolve in relation to each other, for example the arms race between the garter snake and the poisonous newt.
What is coevolution?
This is when two species live together in the same place, but do not necessarily have a relationship with each other.
coexistance
This is the molecule that carries oxygen in red blood cells.
hemoglobin
Sets of populations interacting with each other in the same environment is known as this.
community