Classical Genetics

Question 1

Law of independent
assortment

Answer 1

• The migration of homologues within one pair of homologous chromosomes to opposite poles does not influence the migration of homologues of another homologous pair

Question 2

Law of segregation

Answer 2

• Random segregation of alleles ( and their chromosomes) to separate gametes
• occurs during meiosis I

Question 3

Monohybrid cross

Answer 3

involves a gene for only one trait

Question 4

Dihybrid Cross

Answer 4

Determines the probability of genetic outcomes for TWO traits instead of ONE

Question 5

Incomplete Dominance

Answer 5

• The alleles for a gene do not exhibit the dominant and recessive behaviors

Question 6

Codominance

Answer 6

Both inherited alleles are completely expressed

Question 7

Epistasis

Answer 7

-occurs when one gene affects the phenotypic expression of a second gene

Question 8

Polygenic inheritance

Answer 8

The interaction of many genes to shape a single phenotype

Question 9

Linked genes

Answer 9

Genes that reside on the same chromosome and cannot segregate independently
- Genes that are linked are usually inherited together

Question 10

sex linked inheritance

Answer 10

ex. Hemophilia , Color blindness , MD

Question 11

Nondisjunction Disorders

Answer 11

• Chromosomes do not properly separate