Evolution 1
This term refers to the availability of different traits and alleles within a population.
What is variation?
The ability of an individual to survive and reproduce is known as this.
What is fitness?
The process that creates a new species.
Speciation
Parts that no longer function
Fossils that are found deeper in the earth are...
A) Older
B) Younger
Older
True or False: Similar DNA or similar RNA or similar Proteins/ amino acid sequences are the BEST way to determine if they are closely related.
True!
Any inherited trait that increases an organism's chance of survival is known as this.
What is an adaptation?
True or False: The more similar organisms look during their growth, the more closely they are related
True!
The comparison of growing organisms...
What is embryology?
Preserved remains or imprints of ancient organisms are known as this.
What are fossils?
Fossils that are found closer to the surface on the earth are...
A) Younger
B) Older
Younger
The concept that organisms who are the best suited to their environment will be the most successful
What is survival of the fittest?
Speciation requires isolation.
The type of isolation where organisms are in different locations.
What is Geographic Isolation?
The more species in an environment, the _________ the biodiversity.
A) Greater
B) Lesser
Greater!
Change in the gene pool due to a random event.
What is genetic drift?
Two different species cannot...
Produce viable offspring.
The process in which nature determines which individuals/adaptations survive is known as this.
What is natural selection?
high rate of mutation +
fast reproduction =
Example: Viruses
Evolution happens Quickly
When an error occurs in the replication process it positively impacts the organism's ability to survive and reproduce.
What is a beneficial mutation?
The more similarities between fossils, the more closely _________ they are.
related.
Structures that are similar but have a different function are called...
What are homologous structures?
When one species is physically separated.
What is geographic barrier?
They have parts that have the same function but not the same structure
What are analogous structures?
When an error occurs in the replication process it negatively impacts the organism's ability to survive and reproduce.
What is a harmful mutation?
Different variations of the same gene in a population. Offspring can get two different from their parents.
What is an allele?
When the environment changes,
organisms that are well adapted will ______
Live
When the environment changes, organisms that are not well adapted will _____
Die
The 4 Steps of Natural Selection...
1) Not all organisms in a species are identical (There is some type of genetic variation) 2) Some variations give those organisms an advantage in their environment
3) The organisms that live have an adaptation and reproduce.
4) Their children have the adaptation
When an error occurs in the replication process it does not impact the organism's ability to survive and reproduce.
What is a neutral mutation?