Answer:
organisms migrating in and out of a population
random changes in genetic traits over time
organisms choosing mates randomly
mistakes that occur in an organisms dna
Answer:
Franklin left the university at which she was at. And, it just so happened that Watson came along after she left, got her room, and looked through some folders that Franklin left. Inside the folder was a photograph in which Franklin labeled "Photo 51"
Answer:
Glycine is a highly conserved amino acid residue in the evolution of proteins. Why? Glycine has the smallest side chain of any amino acid. Its size often is critical in allowing polypeptide chains to make tight turns or to approach one another closely.
Explanation:
Answer:
The condition of the Earth had to become favourable before it could support any form of life.
The formation of the different layers around the earth like the ozone layer was necessary before life could originate. Primitive species such as some prokaryotes were able to live in hydrothermal conditions during the initial times. With the passage of time, as the concentration of oxygen increased due to photosynthetic prokaryotes, situations became favourable for eukaryotic organisms to arise.
Each human has 2 alleles and are called diploid organisms. We receive 1 allele from each biological parent.