Lecture 12: Genetics II: Mendel's Laws of Independent Assortment and Linked Genes

Question 1

dihybrid cross

Answer 1

the mating of parental varieties differing in 2 characters

Question 2

result of a dihybrid cross

Answer 2

2 hypotheses are possible:
* dependent assortment
* independent assortment

Question 3

Mendel’s dihybrid cross and his findings

Answer 3

• Mendel counted 556 F2 seeds from a cross between a plant producing round and yellow seeds with a plant that produced wrinkled green seeds. He considered each character separately before considering both together.
• Mendel’s dihybrid cross supported the hypothesis that each pair of alleles segregates independently of the other pairs during gamete formation
• thus, the inheritance of one character has no effect on the inheritance of another

Question 4

law of independent assortment