Section 1

Question 1

dominant traits

Answer 1

in general, if the progeny between purebred organisms looked only like one parent, the expressed trait is dominant. (ex: AA/Aa - dominant trait is A)

Question 2

the principle of uniformity

Answer 2

all progeny of a cross where parents only differ by one trait will appear identical (ie AA x Aa)

Question 3

recessive traits

Answer 3

only expressed when the organism has two recessive alleles as they are masked by dominant traits