WorksheetsDEVELOPMENTAL BIOLOGY
Total questions: 12
Worksheet time: 8mins
Which among the following statement is not true?
All stages of embryonic and fetal development are vulnerable to environmental charges
Disturbance may result to overt bizarre teratogenicity or subtle metabolic disorders that are expressed in postnatal life
The environment has the capacity to charge gene expression without changing the genome
None of the above
The following belongs to external environmental factor
Plastics
Microbes
Heavy metal
Neurotoxins
They are non genetic factors that interfere with normal embryonic and fetal differentiation and morphogenesis
Teratogens
Epigenetics
Sensitivity
All of the above
Which among the following is used to treat skin condition and cancer
Thalidomide
Thalomide
Luminol
Retinoic Acid
True or False Thalidomide is used to treat morning sickness during the 1950's to 1960's
True
False
Neither
Either
How many affected infants were born to women who had taken thalidomide
over 6500 infant
over 8000 infants
over 2500 infants
None of the above
The picture shows which among the following
Down syndrome
Phocomelia
Knockout syndrome
None of the above
Explain how does knockout experiment occurs in the mouse limb
What happens in the limb field when there is an addition of AER
AER stands for
Airial established restricition
Apical Ectodermal Ridge
Aesthetic Endodermal Reticulata
None of the above
True or False: The half life of uranium is 4 to 5 billion years
True
False
Which among the following is considered an effect of DU in the biological system
Radiation
Nausea
Vomiting
None of the above
