BIOS 2250 Exam 1 Questions with
Accurate Answers
Autosomal Dominant correct answer AA, Aa, or aA.
- affected offspring have at least one affected parent
- equal number of males and females
- Affected individual and normal spouse produce 50% or 100% affected children
Autosomal Recessive correct answer offspring of 2 affected individuals are all
affected,
- expressed in males and females equally
- rare traits most affected individuals have unaffected parents?
color blindness correct answer X- linked recessive
- mistake in homologous alignment in meiosis-1 causes duplication of gene
Congenital generalized hypertrichosis correct answer X- linked dominant (rare)
- extra hair follicles
- "werewolf syndrome"
Cystic Fibrosis (what type of disease?) (What part of cell can cause this problem?)
(Symptoms?) correct answer Autosomal recessive (aa), Plasma
membrane
- breathing problems, poor digestion, pancreas degeneration
- affects sweat glands and mucus producing digestive enzyme glands
, expressivity correct answer degree (severeness) of expression of a given trait
Hemophilia correct answer Also x-linked recessive
- cant stop bleeding 1/5,000-10,000 males
- lack clotting factor VIII(A) or IX(B)
- cured by injecting factors into blood
Huntington Disease (type of trait?) (symptoms?) correct answer Adult onset
(autosomal dominant)
- 1-10,000
- personality changes, agitated behavior, dementia, involuntary muscle
movement
- chromosome 4
- caused by toxic protein "Huntington" production in brain
- expanded trinucleotide
- 20 year life expectancy
Hypophosphatemia correct answer X-linked dominant (rare)
- ricket like symptoms ( low phosphate in blood, growth retardation, fragile bone,
vit-d resistant
Marfan syndrome (what type trait?) (symptoms?) correct answer Autosomal
dominant
- tall, thin arms, legs with long thin fingers + toes
- weakened aorta may rupture heart
Accurate Answers
Autosomal Dominant correct answer AA, Aa, or aA.
- affected offspring have at least one affected parent
- equal number of males and females
- Affected individual and normal spouse produce 50% or 100% affected children
Autosomal Recessive correct answer offspring of 2 affected individuals are all
affected,
- expressed in males and females equally
- rare traits most affected individuals have unaffected parents?
color blindness correct answer X- linked recessive
- mistake in homologous alignment in meiosis-1 causes duplication of gene
Congenital generalized hypertrichosis correct answer X- linked dominant (rare)
- extra hair follicles
- "werewolf syndrome"
Cystic Fibrosis (what type of disease?) (What part of cell can cause this problem?)
(Symptoms?) correct answer Autosomal recessive (aa), Plasma
membrane
- breathing problems, poor digestion, pancreas degeneration
- affects sweat glands and mucus producing digestive enzyme glands
, expressivity correct answer degree (severeness) of expression of a given trait
Hemophilia correct answer Also x-linked recessive
- cant stop bleeding 1/5,000-10,000 males
- lack clotting factor VIII(A) or IX(B)
- cured by injecting factors into blood
Huntington Disease (type of trait?) (symptoms?) correct answer Adult onset
(autosomal dominant)
- 1-10,000
- personality changes, agitated behavior, dementia, involuntary muscle
movement
- chromosome 4
- caused by toxic protein "Huntington" production in brain
- expanded trinucleotide
- 20 year life expectancy
Hypophosphatemia correct answer X-linked dominant (rare)
- ricket like symptoms ( low phosphate in blood, growth retardation, fragile bone,
vit-d resistant
Marfan syndrome (what type trait?) (symptoms?) correct answer Autosomal
dominant
- tall, thin arms, legs with long thin fingers + toes
- weakened aorta may rupture heart
