Unit 9 notes 6

Question 1

What shows evidence of evolution?

Answer 1

Fossils, anatomy, embryology, biochemistry

Question 2

Define Antibiotic resistance

Answer 2

When one cell in a population of cells undergoes a mutation, then only that antibioitic resistant cell survives, the cell divides and the whole population becomces anitbiotic resistant

Question 3

Define fossils

Answer 3

Perserved remains or imprints of an ancient organism

Question 4

How can you tell how old a fossil is?

Answer 4

By relative or radioactive dating

Question 5

Define relative dating?

Answer 5

When age of a fossil is determinded by the layers of the earth

Question 6

Define radioactive dating

Answer 6

When the age of a fossil is determinded by carbon - 14

Question 7

What can fossils provide us evidence about?

Answer 7

The anatomy of an organism, the habitat of an organism, and what an organism ate

Question 8

Define anatomy

Answer 8

The bone and organ structure of an organism

Question 9

Do organisms with homologous or analogous structures have a common ancesor?

Answer 9

Homologous

Question 10

Define vestigial structures

Answer 10

A structure in a present day organism that no longer has a purpose, but was useful to an ancester

Question 11

Define embryos

Answer 11

The earliest stage of growth and development in an animal

Question 12

Define biochemistry

Answer 12

Using biological molecules to see evolutionary relationships

Question 13

Define phylogenic trees

Answer 13

Show evolutionary relationships based on DNA similarties