Mendel: Part 2

Question 1

Mendel’s Second Law: Independent assortment

Answer 1

The inheritance of one does not influence the chance of inheriting the other (look at pictures drawn and in powerpoint)

Question 2

Independent assortment allows numerous _________ to take place between chromosomes.

Answer 2

Crossovers

Question 3

Product rule

Answer 3

Predicts the chance of parents with known genotypes to produce offspring of a particular genotype
Ex. RrYy x RrYy = 1/4x1/4 = 1/16 chance of offspring having homozygous recessive genotype

Question 4

Using probability to track multiple traits

Answer 4

BbHhee x bbhhEe
Use one Punnett squares for each trait
Chance child has bbHhEe= 1/2 x 1/2 x 1/2= 1/8

Question 5

Pedigree

Answer 5

symbolic representation of family relationships and the transmission of inherited traits, the bigger the tree the easier to read

Question 6

Need to know symbols and lines

Answer 6

look at chart on powerpoint

Question 7

Basic pedigree symbols

Answer 7

Circle= female
Square= male
Filled in = express trait
Empty= “normal”, doesn’t express trait
Half-filled in= members that MUST be carriers

Question 8

Autosomal recessive on a pedigree

Answer 8

If a child expresses the trait, then the parents are inferred to be heterozygote carriers