Topic 4- Evolutionary relationships

Question 1

How did scientists use to determine relationships between species?

Answer 1

Physical features

Question 2

What are the three types of sequence data are used to investigate evolutionary relationships?

Answer 2

-DNA
-mRNA
-Amino acids

Question 3

What can sequencing technology determine?

Answer 3

The order of DNA bases, mRNA bases and amino acid order within an organisms genome

Question 4

What is genome sequencing particularly useful for?

Answer 4

comparison with an extinct species

Question 5

Scientists will choose specific 1._____ or sections of the 2.______ for comparison between organisms

Answer 5

1.Proteins
2.Genome

Question 6

What will looking at multiple proteins or multiple regions of the genome allow for?

Answer 6

a more accurate estimate of evolutionary relatedness

Question 7

For all types of sequence data, it can be said that the more 1._____ the sequences, the more 2._____ ______ the species are

Answer 7

1.similar
2.closely related

Question 8

Two groups of organisms with very similar sequences will have separated into separate species more 1.______

Answer 8

1.recently

Question 9

Species that have been separated for longer have had a greater amount of time to?

Answer 9

accumulate mutations and changes to their DNA,mRNA and amino acid sequences

Question 10

What other technique can the proteins of organisms also be compared using?

Answer 10

Immunological

Question 11

Which protein is found in many species and is used in multiple experiments?

Answer 11

albumin

Question 12

What is the method used for immunological techniques?

Answer 12

-Albumin is extracted from the blood of different species
-Albumin is injected into different rabbits
-Rabbits produce antibodies
-Different albumins and antibodies are mixed
_prepcipate from each sample is mixed from each sample and weighed