Exam 19: Cellular Mechanisms of Development

Which genes are expressed in Drosophila after pattern formation along the A/P axis has been successfully established?

Describe the apoptotic pathway in mammalian cells.

A muscle precursor cell expressing the MyoD1 gene would be considered to be

Drosophila eggs acquire an initial asymmetry before fertilization as a result of

A fertilized egg is called a(n)

There are cases,particularly in fruit flies,in which a normal body part grows in the wrong spot.For instance,legs on the head growing instead of antennae,or a second set of wings behind the normal pair.What can explain this?

Overexpression of caudal in the early Drosophila embryo,at a level high enough to overcome inhibition by Bicoid protein,would

Check all of the features of C.elegans that make it a great model system to study developmental processes.

You have discovered a new gene similar to an integrin.If you misexpress this gene in the wrong tissue early in development,what is a likely phenotype?

Many insects,like moths and flies,undergo complete metamorphosis.What would you predict about gene expression in these two kinds of insects?

How did Briggs and King move the nuclei between cells?

In general,the blastomeres of the _____ form the ectodermal tissues.

Plants do not utilize the process of cell migration in their development.Instead plants utilize

A complete cell lineage map exists for

Adult stem cells are usually

You created a worm that expresses a human Bcl-2 transgene,and you are crossing the transgene into a homozygous ced-9 mutant background.However,you inadvertently used a clone of Bcl-2 with a mutation in the BH domain,which is essential for function.What results do you expect for the ced-9 mutants with the mutant Bcl-2 transgene?