Week 5 (part 2)

Question 1

DNA replication

Answer 1

S period, all dna, both dna strands, dna polymerase, dna to rna, original dna strands stay apart

Question 2

DNA transcription

Answer 2

Constantly, only certain genes, one dna strand, rna polymerase, DNA TO RNA, original strand recoil

Question 3

RNA processing

Answer 3

In eukaryotic cells, mRNA is processed before leaving the nucleus, a cap and tail are added to chemically protect the RNA

Question 4

Mutation

Answer 4

Any change in DNA

Question 5

Deletion

Answer 5

One or more nucleotides are deleted from DNA

Question 6

Insertion

Answer 6

One or more nucleotides are inserted into DNA

Question 7

Mutagen

Answer 7

Something that causes mutation, high energy radiation in certain chemicals

Question 8

Overall mutation rates in humans

Answer 8

1 in 50 million

Question 9

Evolution

Answer 9

An inheritable change from one generation to the next in characteristics of individuals in a population

Question 10

Fossil record

Answer 10

mineralized remains of organisms

Question 11

Earth formed

Answer 11

4.5 billion years ago

Question 12

Oceans formed

Answer 12

4 billion years ago

Question 13

Biochemistry

Answer 13

Pseudogenes, universality of DNA as the genetic material, universality of codons, pattern of genetic similarity

Question 14

Directional selection

Answer 14

Natural selection in which individuals at one end of the phenotypic range

Question 15

Stabilizing selection

Answer 15

Natural selection in which intermediate phenotypes survive or reproduce more successfully