Classical Genetics

Question 1

Describe the law of Dominance

Answer 1

States when 2 organisms are crossed, homozygous for 2 opposing traits the offspring will be heterozygous but only show the dominant trait

Question 2

Describe the law of segregation

Answer 2

States that during the formation of gametes, the two traits carried by the parent separates

Question 3

What is a test-cross

Answer 3

Used to determine whether a an individual plant or animal showing the dominant trait is TT or Tt

Question 4

Describe the law of independent assortment

Answer 4

When a cross is carried out between 2 individuals that have are hybrid for 2 set of traits, each trait will be inherited individually

Question 5

What is incomplete dominance

Answer 5

When both of the traits are mixed and expressed

Question 6

What is codominance

Answer 6

When both traits are expressed together but independently

Question 7

What are polygenic traits

Answer 7

Characteristics that are controlled by several genes

Question 8

Give 2 examples of sexlinked recessive traits

Answer 8

Color blindness and hemophilia

Question 9

What is a karyotype

Answer 9

Is a procedure that analyzes number of chromosomes

Question 10

What is the difference between gene mutations and chromosome mutation

Answer 10

Gene- caused by change in DNA sequence
Chromosome- abnormal number of chromosomes