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Thalassaemia major is also known as…
a) Cooley’s anemia    
b) sickle cell anemia
c) mycocytic anemia
d) nutritional anemia

b

Explanation: Hemoglobin S is an abnormal form of hemoglobin that causes the red cells to become rigid, and sickle shaped. This is commonly called sickle cell anemia


Which of the following is/are the characteristic/s of linked genes?
a) they do not show recombination
b) the ideal Mendelian ratio of independent assortment is deviated
c) they do not assort independently in offspring
d) all of these

d

Gene linkage can easily be detected by performing………between two gene pairs.
a) dihybrid cross        
b) test cross
c) monohybrid cross
d) all of these

b

When F1 offspring are crossed with the dominant parents, all the F2 offspring develop dominant character; this test is/are
a) dihybrid cross        
b) test cross
c) monohybrid cross
d) back cross

d

A cross between F1 hybrid with either of parents is called…….
a) dihybrid cross        
b) test cross
c) monohybrid cross
d) back cross

d

The test cross is used to determine the…
a) phenotype of an organism  
b) genotype of an organism
c) both a and b
d) none of them

b

Explanation: genotype is the genetic composition of an individual



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