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#Question id: 19802

The low expression level of cry genes seems to be due to the presence in them of sequences not commonly found in plant coding regions. Such as
(1) Localized A+T-rich regions resembling plant intrans
(2) 18 potential plant polyadenylation signal sequences
(3) 13 ATTTA sequences, which destabilize mRNA
(4) Codons that are rarely used in plants
Which of the above statements are correct?

#Unit 12. Applied Biology

1&2
1, 2&3
2&3
1, 2, 3&4

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#Question id: 1534

#Unit 4. Cell Communication and Cell Signaling

Cadherin proteins help animal cells stick (adhere) to each other. Choose which statement about cadherin in cancer cells that are metastasizing (spreading) throughout a patient's body is most likely correct.

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#Question id: 4013

#Unit 3. Fundamental Processes

The textbook states that the nucleotide sequence of splice sites is “highly conserved” and of “ancient origin.” How do we know this sequence is ancient?

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#Question id: 2413

#Unit 2. Cellular Organization

Decoration of actin filaments with myosin S1 is commonly used to:

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#Question id: 33481

#Unit 2. Cellular Organization

A. In homologous introns, the pattern of divergence involves both changes in length.

B. Divergence in introns is due to deletions and insertions and base substitutions.

C. Introns are slowly evolve while exons much more rapidly

D. When a gene is compared among different species, there are instances where its exons are homologous but its introns have diverged so much that very little homology is retained.

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