2- Which pair of alleles is heterozygous? a-RR    b- Rr     c- rr

6-Green is dominant to yellow. Two heterozygous green plants are crossed. What are the genotypes of the offspring ?     a-25% GG, 50% Gg, 25% gg         b-75% Gg, 25% gg

1-The different forms of a single gene that are passed from generation to generation? a-alleles      b- genotype

9- G = green, g = yellow The genotype for a yellow plant is... a-GG    b-Gg   c-gg

10- B = brown fur b = white fur In the Punnett square, what is the probability for white fur?    a-0%     b-25%   c-50%     d-75%

4-Which of the following is purebred (= true breeding) ?    a-AA    b-aa    c-Aa     d-Both AA and aa

7-In a heterozygous genotype, the ___________ allele takes over in the phenotype. a-recessive   b-dominant   c-lower case letter

13-An organism's genetic make-up: a-phenotype b-genotype c-dominant d-recessive

12-What is another way of saying "purebred or true breeding” ? a-homozygous b-dominant c-recessive d-heterozygous

8-brown eyes are dominant over blue eyes, what would be the parent genotypes if two heterozygous brown eyed persons were crossed?  a- BB and bb     b- Bb and Bb

15-Which genotype belongs in the empty box in the Punnett square? a-GG b-gg c-Gg d-GGgg

14-A farmer crosses large apples with a sweet taste apple to produce large & sweet apples. Which process does this scenario describe? A-Adaptation B- mutation C-Natural selection D- selective breeding

5-Tall is dominant to short.        A homozygous tall plant is crossed with a short plant. What will be the phenotypes of the offspring?   a-100% tall     b-50% tall, 50% short