Multi-Trait Inheritance

Question 1

Inheritance of Traits

Answer 1

• Most traits that are inherited are actually controlled by groups of genes, not one single gene
• A combination of two genes results in the inheritance of blue, green and brown eyes that can be either dark or light in colour

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Question 2

discontinuous variation

Answer 2

• the traits Mendel looked at in pea plants, one characteristic didn’t interact with any others
• pea colour did not interact or effect if it was wrinkled
• uncommon in nature

Question 3

continuous variation

Answer 3

• most traits are controlled by multiple genes, many times the phenotype is a result of a group of genes
  -the trait may be affected by genes around it that may have an additive or a negating effect on the gene
• skin colour, hair colour, eye colour and height

Question 4

Mendel’s Experiments

Answer 4

• ## Mendel looked at the inheritance of multiple traits with discontinuous variation

Question 5

dihybrid corss

Answer 5

individuals inherited two pair of allele
- still look at inheritance patterns of the P, F1 and F2 generations

Question 6

Multi-Trait Inheritance

Answer 6

A individual who is heterozygous for two characteristics can produce 4 possible types of gametes

Question 7

Mendel’s Law of Independent Assortment

Answer 7

• inheriting one allele has no impact on the inheritance of another
• parents are just as likely to produce any of the four gametes

Question 8

Calculating Probabilities

Answer 8

multiple the two probabilities
to determine the probability of two or more events occurring given that the events are independent of one another