2. two purple flower (bb) are bred with each other in the same garden. what are the odds that red (bb) and blue (bb) flower will occur in the second generation?
a. 50% red flowers; 50% blue flowers
b. 25% red flowers; 75% blue flowers
c. 75% red flowers; 25% blue flowers
d. 25% red flowers; 25% blue flowers

3. what is formed at the end of meiosis?

two genetically identical cells
four genetically different cells
four genetically identical cells
two genetically different cells

6. which of the following dna sequences will result from the amino acid sequence -pro-phe-tyr-?

gggtg
cccac
gggag


7. which of the following frameshift mutations might be expected to have the least impact on an organism?

a deletion of two nucleotides near the beginning of a gene
an insertion of three nucleorides in the middle of a gene
a deletion of four nucleotides near the end of a gene
an insertion of five nucleotides at a gene's promoter site

8. if a mutation occurs in the gene for the lac repressor and results in a repressor that does not bind lactose, which of the following will be observed?

the mutant will not be able to grow on lactose
the mutant will only be able to grow on lactose
the mutant will only be able to grow on lactose and on other sugars
the mutant will be harmed by the presence of lactose

9. if a man with blood type a and a woman with blood type b produce and offspring, what might be the offspring's blood type?

blood type combination of alleles
a /a/a or /a/

b /b/b or /b/

ab / a/b

o //

10. which of the following would require the use of the recombinant dna?

crossing two apple trees to create better apples
breeding a donkey and a horse to make a mule
engineering bacteria that produce human insulin
creating a polyploid banana tree