Studied by 0 people
Looks like no one added any tags here yet for you.
what are the 4 methods for measuring genetic diversity
frequency of measurable/observable characteristics, base sequence of dna, base sequence of mrna, amino acid sequence of the proteins encoded by dna and rna
what are the drawbacks of using observable characteristics?
2 species may seem similar but could have many differences in their dna and be quite distantly related, e.g. sperm whales and dolphins. also environment can affect observable characteristics but these are not environment
what are the limitations of using protein sequences to try and identify phylogenic relationships with closely related species?
protein comparisons are less useful when comparing very closely related organisms- they could all have the same primary structure for a given protein, even though the base sequence is differently
why is it necessary to automate the comparison of dna sequences using computers and lasers
theres far too much data for humans to count manually
explain what is meant by the term ‘molecular clock’
we can measure the time by the number of differences in the DNA code. the more genetic differences there are between organisms, the more distant their common ancestor because mutations happen regularly over time
