Development in Eukaryotes (developmental patterning in eukaryotes ALA)

Pattern formation and why is it important in eukaryote development?

establishes a body plan, including the MAJOR axes of organism - dorsoventral, anteroposterior, and the left-right or root-shoot and radial axes in plants

How would you be able to distinguish if your gene of interest is acting as a morphogen?

It would appear to be expressed over a long distance and in a gradient

Maternal effect gene

a gene expressed in the mother’s genome affect the phenotype of her offspring

Who makes maternal effect gene products

mothers

Where are the products of maternal effect genes deposited

in her eggs (oocytes)

Is an mRNA from a maternal effect gene deposited before or after fertilizaiton

before

Does a male parent contribute maternal effect gene products to his offspring?

no

What type of proteins are produced from maternal effect genes?

mostly transcription factors

Homeotic gene

master regulator gene that regulate the development of anatomical structures in various organisms such as echinoderms, insects, mammals, and plants

What type of protein is produced from a homeotic gene

transcription factor

What genes do homeotic proteins regulate?

genes that control the development of body parts

The duplication of homeotic (Hox) genes has been significant in the evolution of animals because it …

permitted the evolution of novel forms