Natural Selection
For natural selection to occur there needs to be genetic ________ in the population.
What is variation?
Two individuals are the same species if they can
What is Have fertile offspring?
DNA is ____ stranded
What is Double?
Transcription occurs in the
The complementary strand to the following DNA strand would be...
ATGGCCTATG
TACCGGATAC
Fitness is determined by the ability to _______ and ________.
What is survive and reproduce?
The process of becoming a new species by the individuals reproducing at different times in the year.
What is temporal isolation?
DNA is made of the building blocks called
What are nucleotides?
The enzyme that creates the mRNA molecule based off the DNA segment is called
RNA polymerase
The best source of evidence to use when determining most recent ancestors
What is DNA?
A __________ is a trait that increases a organisms fitness.
What is an adaptation?
The ability to reproduce but not produce a fertile offspring is this type of isolation.
What is postzygotic isolation?
What are phosphate, nitrogen bases and deoxyribose sugar.
The RNA will be ____________ at the ribosome and the tRNA will bring the corresponding __________ to create the protein.
What is translated and amino acids
During protein synthesis this step creates the amino acid chain with this type of RNA.
What is translation and tRNA
Variation of traits are created through __________ and ____________.
What are random mutations and recombination during sexual reproduction.
A large population of birds have been living in the same area. Some birds developed a mutation where their mating songs are higher pitch and they started mating earlier in the year. However, they still are living in the same trees and bushes. What type of isolation are they NOT experiencing.
What is Habitat speciation?
When DNA replicates this enzyme splits the DNA strands open.
What is helicase?
The amino acid chain is created and it will then fold depending on the _____________ of the amino acids.
What is hydrophobicity.
In this type of struggle for existence/survive the individuals in a population are trying to fight for resources such as food and shelter
What is competition?
For natural selection to occur there are 4 factors. The four factors are
1) Genetic variation- variations of a trait
2) One variation has a higher fitness and can be passed down to offspring
3) A change in the environment that provides an advantage to one variaiton of the trait
4) The best variation can survive and reproduce more often and there will be an increase of that variation in the population overtime.
This needs to stop to be able to become separate species.
What is gene flow?
This enzyme created a mutation during DNA replication causes a person to have sickle cell anemia
What is DNA polymerase
The sickle cell shape was created due to... describe what happened from DNA through Protein Synthesis
What is a mutation in the DNA during DNA replication that changed the amino acid sequence during protein synthesis this changed the way the chain folded and changed the shape of the protein that changed the function of the hemoglobin in red blood cells.
We will see these best fit organisms more overtime due to the concept called
What is differential reproduction