Chp 3

Question 1

principle of dominance

Answer 1

in a hetero zygote one allele may conceal the presence of another

Question 2

principle of segregation

Answer 2

in a hetero zygote two alleles seperate from eachother during gamete formation

Question 3

principle of independant assortment

Answer 3

alleles of different genes segregate independantly of eachother

Question 4

Additive rule

If the two overlap

Answer 4

If the events A and B are independent, the
probability that at least one of them
occurs, denoted P(A or B), is
P(A) + P(B) - [P(A) × P(B)].

Question 5

Hyposthesis

Answer 5

A well formulated scientific idea

Question 6

What enable scientists to test hypothesis

Answer 6

Data collected from observations or from experimentation

Question 7

Chi square test

Answer 7

χ 2 =€ ((Observed − Expected)^2/Expected)

Question 8

How to calculate degree’s of freedom

Answer 8

Number of phenotypic classes -1, e.g. 4- 1

Question 9

obstacles to human genetic analysis

Answer 9

• incomplete family records
• small # of progeny
• uncontrolled environment

Question 10

pedigrees

Answer 10

diagrams that show relationships among the members of a family(Roman numerals represent generations, arabic numbers represent individuals within a generation

Question 11

If a dominant trait is associated with reduced viability or fertility…..

Answer 11

then most people who show the trait are heterozygous