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BPSC Final UPDATED Actual Exam Questions and CORRECT Answers
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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...

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  • September 16, 2024
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  • 2024/2025
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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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