Genetics

Question 1

Law of Segregation

Answer 1

• Genes have alleles
• One allele from each parent
• Alleles separate in meiosis

Question 2

Law of Dominance

Answer 2

-Dominant form vs. Recessive form

Question 3

Law of Independent Assortment

Answer 3

Inheritance of two traits are independent of one another

Question 4

What is the phenotypic ratio expected from a dihybrid cross following Mendelian genetics?

Answer 4

9:3:3:1

Question 5

What will allow genes on same chromosome to be inherited independently?

Answer 5

Crossing over

Question 6

What are the non-Mendelian inheritance patterns?

Answer 6

Incomplete Dominance, Co-Dominance, Sex Linkage, Cytoplasmic Inheritance

Question 7

Cytoplasmic Inheritance

Answer 7

• Mitochondrial DNA

- Plasmids in bacteria

Question 8

Which form of bacterial gene transfer allows for mapping?

Answer 8

Transduction

Question 9

What does an operon consist of?

Answer 9

Operator, Structural genes, Promoter

Question 10

Where does a repressor bind?

Answer 10

Operator

Question 11

Where does RNA polymerase bind?

Answer 11

Promoter

Question 12

In an inducible system, what is the inducer typically?

Answer 12

The substrate for the enzyme being transcribed

Question 13

What forms in an inducible system?

Answer 13

Inducer-repressor complex removes repressor from operator

Question 14

What forms in a repressible system?

Answer 14

Repressor-Corepressor complex

Question 15

What is the corepressor typically?

Answer 15

End products of biosynthetic pathway controlled

Question 16

What are constitutive genes?

Answer 16

Genes always being trancribed/translated