Exam 19: Differential Gene Expression in Development

The even skipped gene in Drosophila received its name because mutations in that gene often lead to embryos missing the even numbered segments. Based on this information, what is the most likely class of gene to which even skipped would belong?

Which of the following statements is true?

Which of the following statements about pattern formation is false?

Which statement about induction is not true?

Mammalian embryonic stem cells are

The process that results in spatial organization of an organism or a tissue is called

In the development of the vulva in the nematode C. elegans, cells that receive both the primary and the secondary inducer develop into _______.

Development of the lens in the vertebrate eye is induced by signals from the

Which of the following statements about determination is false?

Use the following to answer questions: The diagram below shows experiments performed to determine whether the fates of cells are irrevocably determined. -If cell fate were irrevocably determined, a normal embryo (one with all the cell types in the appropriate location) would develop in

In the development of the vulva in the nematode C. elegans, the primary inducer is produced and secreted by the _______ cell.

Which statement about the homeobox is not true?

The fact that animal somatic cells from early embryos retain their totipotency was first demonstrated by

The differentiation of whorls in Arabidopsis thaliana is regulated by _______ genes.

Induced pluripotent stem cell technology relies on a comparison of _______ between embryonic stem cells and nonstem cells.

Which statement about cytoplasmic determinants in Drosophila is not true?

Positional information in development often comes from _______, substances that diffuse from one group of cells, setting up a concentration gradient.

What is the role of cytoplasmic segregation in determining the fate of a cell?

It may be possible to genetically engineer plants to produce more seeds and fruits by

Which of the following statements about apoptosis is true?