Module 1 Lecture 3

Question 1

phylotypic

Answer 1

may represent the basic vertebrate body plan that was established in the common ancestor of vertebrates

Question 2

homology

Answer 2

having the same or similar features

Question 3

neural crest

Answer 3

a transient embryonic stem cell population that is migratory and makes more than 30 different adult tissues and cell types

Question 4

epithelial to mesenchymal transition

Answer 4

the transition of cells from tightly adherent and epithelial to mesenchymal, migratory, and invasive

Question 5

competency

Answer 5

related to potency and based on the ability of a cell to respond to signals from the local environment

Question 6

Structural homology

Answer 6

similar physical features in organisms that share a common ancestor, but the features serve completely different functions

Question 7

the phylotypic stage

Answer 7

The time point in animal development when an organism most closely resembles other species

Question 8

Neurocristopathy

Answer 8

Developmental congenital (evident at birth) disorder caused by failure of normal neural crest development