DEVELOPMENTAL BIOLOGY
QUESTIONS AND ANSWERS
What is developmental Biology? - CORRECT ANSWER-the
biological discipline aimed at understanding how a single-celled
zygote (fertilized egg) becomes a new multicellular organism
Developmental biology is concerned with... - CORRECT
ANSWER-how genotype is manifested as phenotype
What does the question of differentiation ask in Developmental
Biology? - CORRECT ANSWER-How does a single celled
zygote give rise a multicellular organism?
What does the question of Morphogensis ask in developmental
biology? - CORRECT ANSWER-How do cells form their correct
shapes and organize into tissues, organs, organisms...
What does the question of Growth ask in Developmental
Biology? - CORRECT ANSWER-How do cells "know" when to
stop dividing?
What does the question of Environmental Integration ask in
Developmental Biology? - CORRECT ANSWER-How does an
organism's environment affect its development?
What does the question of Evolution ask in Developmental
Biology? - CORRECT ANSWER-How does changes in
developmental patterns over time give rise to new body
forms/species?
There is no what during cleavage? - CORRECT ANSWER-
growth
, What is cell fate? - CORRECT ANSWER-The characteristics of
cell type (or types) that an early embryonic cell will normally
give rise to
What is a fate map? - CORRECT ANSWER-the summation of
the cell fates for many of the cells of an embryo at a particular
stage of development
What are the three methods of fate mapping? - CORRECT
ANSWER-1. Transplantations 2. Ablations (of the cells) 3.
Labels and Dyes (laser activated florescent dye)
What did Hans Driesch do? - CORRECT ANSWER-used sea
urchins to study development, discovered that cells under
pressure during cleavage develop the same as normal cells
(regulative development)
What did William Roux do? - CORRECT ANSWER-used
mosaic development by deadening one cell
What is differentiation? - CORRECT ANSWER-involves overt
changes in cellular biochemistry and function
What is specification? - CORRECT ANSWER-the ability of cells
to adopt their normal fate when isolated from the embryo (it is
labile so it can be reversed)
What is determination? - CORRECT ANSWER-the ability of a
cell to develop according to its original fate when placed into
another region in the embryo (it is stable and can not be
reversed)
What is autonomous specification? - CORRECT ANSWER-
differential acquisition of cytoplasmic molecules (cell fate
determinants) determined in the egg (says lineage/ inheritance
matters)
QUESTIONS AND ANSWERS
What is developmental Biology? - CORRECT ANSWER-the
biological discipline aimed at understanding how a single-celled
zygote (fertilized egg) becomes a new multicellular organism
Developmental biology is concerned with... - CORRECT
ANSWER-how genotype is manifested as phenotype
What does the question of differentiation ask in Developmental
Biology? - CORRECT ANSWER-How does a single celled
zygote give rise a multicellular organism?
What does the question of Morphogensis ask in developmental
biology? - CORRECT ANSWER-How do cells form their correct
shapes and organize into tissues, organs, organisms...
What does the question of Growth ask in Developmental
Biology? - CORRECT ANSWER-How do cells "know" when to
stop dividing?
What does the question of Environmental Integration ask in
Developmental Biology? - CORRECT ANSWER-How does an
organism's environment affect its development?
What does the question of Evolution ask in Developmental
Biology? - CORRECT ANSWER-How does changes in
developmental patterns over time give rise to new body
forms/species?
There is no what during cleavage? - CORRECT ANSWER-
growth
, What is cell fate? - CORRECT ANSWER-The characteristics of
cell type (or types) that an early embryonic cell will normally
give rise to
What is a fate map? - CORRECT ANSWER-the summation of
the cell fates for many of the cells of an embryo at a particular
stage of development
What are the three methods of fate mapping? - CORRECT
ANSWER-1. Transplantations 2. Ablations (of the cells) 3.
Labels and Dyes (laser activated florescent dye)
What did Hans Driesch do? - CORRECT ANSWER-used sea
urchins to study development, discovered that cells under
pressure during cleavage develop the same as normal cells
(regulative development)
What did William Roux do? - CORRECT ANSWER-used
mosaic development by deadening one cell
What is differentiation? - CORRECT ANSWER-involves overt
changes in cellular biochemistry and function
What is specification? - CORRECT ANSWER-the ability of cells
to adopt their normal fate when isolated from the embryo (it is
labile so it can be reversed)
What is determination? - CORRECT ANSWER-the ability of a
cell to develop according to its original fate when placed into
another region in the embryo (it is stable and can not be
reversed)
What is autonomous specification? - CORRECT ANSWER-
differential acquisition of cytoplasmic molecules (cell fate
determinants) determined in the egg (says lineage/ inheritance
matters)
