BPSC Final UPDATED Actual Exam Questions and CORRECT Answers
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Course
BPSC
Institution
BPSC
BPSC Final UPDATED Actual Exam
Questions and CORRECT Answers
Lecture 13 - CORRECT ANSWER- .....
What is incomplete dominance? - CORRECT ANSWER- When the heterozygous plants
have an intermediate phenotype
What does intermediate phenotype mean? - CORRECT ANSWER- The phenotype is
unlike eithe...
BPSC Final UPDATED Actual Exam
Questions and CORRECT Answers
Lecture 13 - CORRECT ANSWER- ✔✔.....
What is incomplete dominance? - CORRECT ANSWER- ✔✔When the heterozygous plants
have an intermediate phenotype
What does intermediate phenotype mean? - CORRECT ANSWER- ✔✔The phenotype is
unlike either parent
What is High Fe (HFE)? - CORRECT ANSWER- ✔✔the Hemochromatosis Type 1 gene
What is a complex trait? - CORRECT ANSWER- ✔✔Traits that are highly influenced by the
environment, ex: polygenic traits
Is a complex trait the same as a polygenic trait? - CORRECT ANSWER- ✔✔Yes, polygenic
traits are controlled by more than one gene
What does G x E = P mean? - CORRECT ANSWER- ✔✔Genes 'by' Environment equal
Phenotype
G + E = P - CORRECT ANSWER- ✔✔Phenotype results from a combination of
environmental effects and genetic effects
What is the G, E and P for asparagus urine smell? - CORRECT ANSWER- ✔✔G is the
olfactory receptor 2 - wild-type alleles (OR2) vs mutant alleles(or2), E is the act of eating
asparagus, and P is that OR2 can perceive the S compounds of the asparagus and or2 cannot
perceive the S compounds
What is the E factor that changes the color of hydrangea flowers? Is there a G component? -
CORRECT ANSWER- ✔✔The E factor is pH of the soil, the G component is "same
genotype"
,How is hemochromatosis related to food? - CORRECT ANSWER- ✔✔A homozygous
person can develop hemochromatosis if they consume an iron-rich(Fe) diet
The HFE protein controls ________ - CORRECT ANSWER- ✔✔iron uptake
What is the G, E and P in hemochromatosis Type 1? - CORRECT ANSWER- ✔✔G: HFE is
the dominant wild-type(non-disease) hfe is the recessive mutant allele associated with
disease. E: Eating an Fe rich diet. P: individuals that are homozygous or heterozygous for
HFE live normal lives. hfe/hfe individuals consuming an iron rich diet have
hemochromatosis.
Can the symptoms of hemochromatosis be avoided? - CORRECT ANSWER- ✔✔Eliminate
Fe-rich vitamins and foods. Phlebotomy drops Fe levels in blood
Is hemochromatosis a common disease? A serious disease? easy to diagnose? Why? -
CORRECT ANSWER- ✔✔Hemochromatosis is an exceptionally difficult disease to
diagnose
What is a carrier? - CORRECT ANSWER- ✔✔A person who can pass an inherited disease
on to their children but who does not have the disease
When you have hemochromatosis Type 1, what happens to Fe levels in cells? How does this
impact cell health and the health of the liver? - CORRECT ANSWER- ✔✔Excess iron
accumulates in organs and causes organ damage. In the liver, hepcidlin is secreted —> Fe is
not exported from cells and accumulates —> cells die —> organ is damaged
What is lactose intolerance? - CORRECT ANSWER- ✔✔Hypolactasia: Occurs in people
who are homozygous (recessive all lct/lct)
What is the G, E and P for hypolactasia? - CORRECT ANSWER- ✔✔G: LCT is the
dominant wild-type (non-disease allele) and lct is the recessive mutant allele associated with
symptoms. E: eating dairy products. P: lct/lct individuals consuming lactose in their diet have
symptoms of lactose intolerance, individuals that are homozygous or heterozygous for LDT
can consume lactose
, Why are fermented milk products and hard cheese safe for people with lactose intolerance? -
CORRECT ANSWER- ✔✔Fermentation breaks down lactose, lactose acid
What other food products have we talked about in past lectures that use lactose fermentation?
- CORRECT ANSWER- ✔✔yogurt, sour cream, creme fraiche
What is a polygenic trait? - CORRECT ANSWER- ✔✔More than 1 gene
Are polygenic traits inherited in a Mendelian manner? - CORRECT ANSWER-
✔✔Polygenic traits follow the rules of Mendel
Are polygenic traits influenced by the environment? - CORRECT ANSWER- ✔✔Yes,
strongly
Were the traits that Mendel monitored influenced by E? - CORRECT ANSWER- ✔✔No
(part of the reason for his success)
Can you provide some examples of polygenic traits in humans? - CORRECT ANSWER-
✔✔Skin and eye color
Can you provide some examples of polygenic traits in plants? - CORRECT ANSWER-
✔✔fruit diversity
What is an additive effect? - CORRECT ANSWER- ✔✔The phenotype depends on the sum
of the effects of all these gene's alleles
What is a continuous phenotype? - CORRECT ANSWER- ✔✔Genes assort independently?
Were both Mendelian traits and polygenic traits selected for during domestication? -
CORRECT ANSWER- ✔✔yes
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