What happens at the maternal-to-zygotic transition across species?
A. The embryo converts from a syncytial blastoderm to a monolayer of cells
B. The maternal yolk used as an energy source is depleted
C. The embryo goes from being haploid to diploid
D. Activation of transcription from the zygoti...
What happens at the maternal-to-zygotic transition across species?
A. The embryo converts from a syncytial blastoderm to a monolayer of cells
B. The maternal yolk used as an energy source is depleted
C. The embryo goes from being haploid to diploid
D. Activation of transcription from the zygotic genome correct answersD. Activation of transcription from
the zygotic genome
Nusslein-Volhard and Wieschaus conducted a genetic screen hoping to understand:
A. How the body plan of the embryo is established
B. How the Toll signal transduction pathway works
C. How transcription factors are regulated during embryogenesis
D. How mRNAs can be localized to different parts of the cell correct answersA. How the body plan of the
embryo is established
The signal that localizes the bicoid mRNA is found:
A. In the promoter
B. In the 3'UTR
C. In the 5'UTR
D. In an intron correct answersB. In the 3'UTR
What is the transcription factor that activates genes that specify ventral identity in the Drosophila
embryo?
A. Dorsal
B. Cactus
C. Toll
D. Spatzle correct answersA. Dorsal
, Why are different genes that are controlled by the same transcription factor activated in different spatial
patterns?
A. Some enhancers also have binding sites for repressors that counteract that transcription factor activity
B. There are a different number of binding sites for the transcription factor in their enhancers
C. There are differences in the chemical affinity of the binding sites in their enhancers for the
transcription factors
D. All of the above correct answersD. All of the above
The study of which model organism led to the discovery of transposons?
A. Maize
B. Fruit flies
C. Sea squirt
D. Mouse correct answersA. Maize
The ends of a transposon consist of:
A. Inverted repeats
B. Unique sequences
C. CpG islands
D. Exact repeats correct answersA. Inverted repeats
Mobilization of a transposon can result in:
A. Small changes that influence the evolution of an organism
B. Incorporation into an existing gene to form a new gene
C. Insertional mutagenesis
D. All of the above correct answersD. All of the above
What model organism hosts P element transposons?
A. Sea squirt
B. Mouse
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller QUILLSKY. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $15.49. You're not tied to anything after your purchase.
