General (2) Flashcards
In what cases is X-inactivation non-random?
When there is a structurally abnormal X chromosome
Name 4 syndromes with absent speech
- Angelman
- Mowat-Wilson
- Phelan-McDermid
- Rett
Name 4 conditions in which germline mosaicism has been observed
- DMD
- Hemophilia A & B
- OI
Does an anomaly usually occur before or after 8-10 fetal weeks?
before
Does a deformation usually occur before or after 8-10 fetal weeks?
after
What are the similarities and differences between deformations and disruptions?
Both are compressions or biochemical distortions of an already normally formed body part; a disruption, however, occurs to such an extreme degree that it looks like an anomaly
Is spina bifida an anomaly, deformation, or disruption?
anomaly
Is anopthalmia an anomaly, deformation, or disruption?
anomaly
Is postaxial polydactyly an anomaly, deformation, or disruption?
anomaly
Are club feet an anomaly, deformation, or disruption?
deformation
Are contractures an anomaly, deformation, or disruption?
deformation
Is a web neck an anomaly, deformation, or disruption?
disruption
What are 3 examples of normal variants?
- 5th finger clinodactyly
- 2-3 toe syndactyly
- epicanthal folds
Is an association random or non-random?
non-random
Are bone dysplasias usually genetic or not?
usually genetic
Repression
feelings, perceptions, or memories are lost to consciousness