NURS 642 Genetics Test Questions and Answers
genetics
the study of heredity
Genomics
study of whole genomes, including genes and their functions
Genotype
An organism's genetic makeup, or allele combinations.
Phenotype
An organism's physical appearance, or visible traits.
Epigentics
the study of environmental influences on gene expression that occur without a DNA change
How may chromosomes do humans have?
22 autosomes and a pair of sex chromosomes
XX= female
XY= male
Genetic Family Red Flags
should perform a 3 generation pedigree
multiple family members with the same disease
earlier than expected onset of disorder
Disorder in the less common sex
parents who have close relationships
Developmental Red Flags
o No turning to voice at 6 months
, o No babbles or sitting w/o support at 9 months
o No name orientation by 12 months
o failure to point to request or comment by 18 months
o failure to follow simple command by 18 months
o without 10-25 words by 24 months
o without 2 word phrases by 2 years
o without 3 word phrases by 3 years
o unintelligible speech after 3 years
o regression in language or skills AT ANY AGE
Autism Red Flags
o absent babbing, pointing or gesturing at 12 mon
o single words at 16 months
o 2 word spontaneous phrases at 24 months
o Echolalia
o ANY LOSS of DEVELOPMENTAL MILESTONES
Genomic Imprinting
a phenomenon in which expression of an allele in offspring depends on whether the allele is
inherited from the male or female parent
Different diseases arise from mother or father
Prader Willi Syndrome
Caused by a lack of genetic material in the 15th pair of chromosomes. Usually inherited from
the father.
genetics
the study of heredity
Genomics
study of whole genomes, including genes and their functions
Genotype
An organism's genetic makeup, or allele combinations.
Phenotype
An organism's physical appearance, or visible traits.
Epigentics
the study of environmental influences on gene expression that occur without a DNA change
How may chromosomes do humans have?
22 autosomes and a pair of sex chromosomes
XX= female
XY= male
Genetic Family Red Flags
should perform a 3 generation pedigree
multiple family members with the same disease
earlier than expected onset of disorder
Disorder in the less common sex
parents who have close relationships
Developmental Red Flags
o No turning to voice at 6 months
, o No babbles or sitting w/o support at 9 months
o No name orientation by 12 months
o failure to point to request or comment by 18 months
o failure to follow simple command by 18 months
o without 10-25 words by 24 months
o without 2 word phrases by 2 years
o without 3 word phrases by 3 years
o unintelligible speech after 3 years
o regression in language or skills AT ANY AGE
Autism Red Flags
o absent babbing, pointing or gesturing at 12 mon
o single words at 16 months
o 2 word spontaneous phrases at 24 months
o Echolalia
o ANY LOSS of DEVELOPMENTAL MILESTONES
Genomic Imprinting
a phenomenon in which expression of an allele in offspring depends on whether the allele is
inherited from the male or female parent
Different diseases arise from mother or father
Prader Willi Syndrome
Caused by a lack of genetic material in the 15th pair of chromosomes. Usually inherited from
the father.
