4.3.5- Mutations, Meiosis End of topic test

Question 1

What are the 3 causes of mutations?

Answer 1

Deletion of bases
Addition of bases
Substitution of bases

Question 2

What type of substances can increase the rate at which mutations occur?

Answer 2

Mutagenic agents

Question 3

Which process produce haploid gametes?

Answer 3

Meiosis

Question 4

What is the product of Meiosis?

Answer 4

4 genetically different daughter cells

Question 5

How many cells are produced by Mitosis?

Answer 5

2

Question 6

How many chromosomes are found in cells produced during human meiosis?

Answer 6

23

Question 7

Which process in cell division produces genetically identical daughter cells?

Answer 7

Mitosis

Question 8

What is the percentage difference in the amino acid sequence between mammals and insects?

Answer 8

33%

Question 9

How are gene technologies used to study genetic diversity?

Answer 9

Gene technologies allow the alleles
in an individual to be directly measured.

Alleles are the different versions of a gene and alleles are what gives rise to genetic d
iversity
iversity in a population.

Gene technologies allow genetic diversity to be directly measured. For example, the number of d
ifferent alleles for a single gene and the number of i
ndividuals with each allele directly shows genetic diversity.

Previously, genetic diversity could be inferred by comparing visible characteristics between organisms.

Question 10

What statistical measures should be used to ensure accurate results when investigating variation?

Answer 10

Finding mean
Random sampling
Standard deviation (shows how far away the measured values are from the average)

Question 11

3 statements about genetic variation about meiosis

Answer 11

Any combination of chromosomes is produced in meiosis I

Crossing over increases genetic variation

Sections of DNA are swapped between chromosomes in a pair

Question 12

When does crossing over occur?

Answer 12

Prophase 1