In some genetically engineered tomatoes, fruit ripening was delayed by crippling the gene that produces which hormone?

A. Abscisic acid
B. Auxin
C. Ethylene
D. Gibberellin
E. Cytokinin


Answer: C

Biology & Microbiology

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Consider the human population. With regards to the ABO blood groups there are _____ alleles, ____ possible genotypes, and _____ possible phenotypes.

A. 3, 4, 6 B. 2, 4, 6 C. 2, 3, 4 D. 2, 6, 4 E. 3, 6, 4

Biology & Microbiology

The gametophyte generation of plants begins ____, where meiosis produces ____

a. after fertilization; a multicellular, diploid organism b. after fertilization; a multicellular; haploid organism c. in the sporangia; a multicellular; diploid organism d. in the sporangia; haploid spores e. in the sporangia; diploid spores

Biology & Microbiology

If the ratio of affected individuals is about 50% male and 50% female then the disease is _____________.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

Genetic information in DNA and RNA is stored as a sequence of three nucleotide bases. On DNA a group of three nucleotides is called a _____, while on the complementary strand of mRNA, this sequence is called a ____ .

a. genome / proteome b. intron / exon c. base triplet / codon d. codon / anticodon e. base triplet / anticodon

Biology & Microbiology