DEVELOPMENTAL BIOLOGY EXAM
REVIEWED QUESTIONS AND
ANSWERS
what is embryogenesis - CORRECT ANSWER-development of
embryo after fertilization
what are the stages of development of a frog - CORRECT
ANSWER-1. fertilization
2. cleavage
3. gastrulation
4. neurulation
5. organogenesis
6. metamorphosis
what do endoderm cells give rise to - CORRECT ANSWER-1.
epithelium of digestive tract
3. lung
4. pancreas
5. colon
6. liver
what do ectoderm cells give rise to - CORRECT ANSWER--
nervous system
1. brain
2. neurons
3. skin
what do mesoderm cells give rise to - CORRECT ANSWER-1.
dermis
2. heart
3. muscle and skeleton
4. kidneys
,5. gonads
6. connective tissues
difference between holoblastic and meroblastic division -
CORRECT ANSWER-holoblastic: entire egg is divided
meroblastic: only part of egg is divided
what is epigenesis view of development? - CORRECT
ANSWER-structures of embryo develop progressively, as
opposed to preformation
Heinz Christian Pander (1817)
-what did he discover
-what was significance of his discovery - CORRECT ANSWER-
1) discovered germ layers
2) proposed induction
what are the 4 stages of development
Phillips
Made
Cold
Grapes - CORRECT ANSWER-1) pattern formation
2) morphogenesis
3) cell differentiation
4) Growth
Weismann
-what did he propose regarding development - CORRECT
ANSWER--He proposed mosaic development
-nuclear factors in cells pre-determine development
Roux
-what was his experiment
-significance of his experiment - CORRECT ANSWER--used
hot needle to kill part of cell, other part grew only half of
embryo, killed cell did not grow at all
-this was evidence for mosaic development
, Driesch
-what was his experiment
-significance of his experiment - CORRECT ANSWER--
separated sea urchin embryo into two, one died, other grew
normal but smaller
-evidence for regulatory development
cleavage does not have what stages? - CORRECT ANSWER-
G1, G2, and growth
explain pattern formation
-what forms during this stage (name 3) - CORRECT ANSWER-
process where cell activity is organized into space and time
-body axis plan
-polarity
-germ layers
explain morphogenesis
-what forms during this stage (name 3) - CORRECT ANSWER-
-embryo goes under change in 3D forms
-gastrulation, apoptosis, cell migration,
explain cell differentiation
-give example - CORRECT ANSWER-cells become specialized
for its future function
-muscle cell, nerve cell
germ cells contain what type and number of chromosomes -
CORRECT ANSWER-haploid
-single copy from each parent
Spemann and Mangold
-what was his experiment
-significance of his experiment - CORRECT ANSWER--dorsal
lip was transplanted from donor to host, then second notochord
REVIEWED QUESTIONS AND
ANSWERS
what is embryogenesis - CORRECT ANSWER-development of
embryo after fertilization
what are the stages of development of a frog - CORRECT
ANSWER-1. fertilization
2. cleavage
3. gastrulation
4. neurulation
5. organogenesis
6. metamorphosis
what do endoderm cells give rise to - CORRECT ANSWER-1.
epithelium of digestive tract
3. lung
4. pancreas
5. colon
6. liver
what do ectoderm cells give rise to - CORRECT ANSWER--
nervous system
1. brain
2. neurons
3. skin
what do mesoderm cells give rise to - CORRECT ANSWER-1.
dermis
2. heart
3. muscle and skeleton
4. kidneys
,5. gonads
6. connective tissues
difference between holoblastic and meroblastic division -
CORRECT ANSWER-holoblastic: entire egg is divided
meroblastic: only part of egg is divided
what is epigenesis view of development? - CORRECT
ANSWER-structures of embryo develop progressively, as
opposed to preformation
Heinz Christian Pander (1817)
-what did he discover
-what was significance of his discovery - CORRECT ANSWER-
1) discovered germ layers
2) proposed induction
what are the 4 stages of development
Phillips
Made
Cold
Grapes - CORRECT ANSWER-1) pattern formation
2) morphogenesis
3) cell differentiation
4) Growth
Weismann
-what did he propose regarding development - CORRECT
ANSWER--He proposed mosaic development
-nuclear factors in cells pre-determine development
Roux
-what was his experiment
-significance of his experiment - CORRECT ANSWER--used
hot needle to kill part of cell, other part grew only half of
embryo, killed cell did not grow at all
-this was evidence for mosaic development
, Driesch
-what was his experiment
-significance of his experiment - CORRECT ANSWER--
separated sea urchin embryo into two, one died, other grew
normal but smaller
-evidence for regulatory development
cleavage does not have what stages? - CORRECT ANSWER-
G1, G2, and growth
explain pattern formation
-what forms during this stage (name 3) - CORRECT ANSWER-
process where cell activity is organized into space and time
-body axis plan
-polarity
-germ layers
explain morphogenesis
-what forms during this stage (name 3) - CORRECT ANSWER-
-embryo goes under change in 3D forms
-gastrulation, apoptosis, cell migration,
explain cell differentiation
-give example - CORRECT ANSWER-cells become specialized
for its future function
-muscle cell, nerve cell
germ cells contain what type and number of chromosomes -
CORRECT ANSWER-haploid
-single copy from each parent
Spemann and Mangold
-what was his experiment
-significance of his experiment - CORRECT ANSWER--dorsal
lip was transplanted from donor to host, then second notochord
