Multiple Choice QuestionsIf a colourblind woman marries a normal visioned man, their sons will be
all normal visioned
one-half colourblind and one-half normal
three-fourths colourbling and one-fourth normal
three-fourths colourbling and one-fourth normal
Sickle cell anaemia has not been eliminated from the African population because
it is controlled by recessive genes
it is not a fatal disease
it provides immunity against malaria
it provides immunity against malaria
Both sickle cell anaemia and Huntington's chorea are
bacteria-related diseases
congenital disorders
pollutant-induced disorders
pollutant-induced disorders
B.
congenital disorders
Both sickle cell anaemia and Huntington's chorea are congenital genetic disorders. Sickle cell anaemia was first opened by James Herrick (1904). In this disease the patient's haemoglobin level reduced to half of the normal and the RBCs become sickle shaped. A single mutation in a gene can cause sickle cell anaemia.
Huntington's chorea is caused by autosomal mutation which is dominant. The gene is present on chromosome number 4.
A disease caused by an autosomal primary non-disjunction is
Down's syndrome
Klinefelter's syndrome
Turner's syndrome
Turner's syndrome
The genotypes of a Husband and Wife are IAIB and IAi. Among the blood types of their children, how many different genotypes and phenotypes are possible?
3 genotypes ; 3 phenotypes
3 genotypes ; 4 phenotypes
4 genotypes ; 3 phenotypes
4 genotypes ; 3 phenotypes
Among the following characters, which one was not considered by Mendel in his experiments on pea?
Stem – Tall or Dwarf
Trichomes – Glandular or non-glandular
Seed – Green or Yellow
Seed – Green or Yellow
Which one from those given below is the period for Mendel's hybridization experiments?
1856 - 1863
1840 - 1850
1857 - 1869
1857 - 1869
Which of the following characteristics represent ‘Inheritance of blood groups’ in humans?
a. Dominance
b. Co-dominance
c. Multiple allele
d. Incomplete dominance
e. Polygenic inheritance
b, c and e
a, b and c
a, c and e
b, d and e
Select the correct match
Alec Jeffreys - Streptococcus pneumoniae
Alfred Hershey and Martha Chase - TMV
Francois Jacob and Jacques Monod - Lac operon
Matthew Meselson and F. Stah - Pisum sativum
Select the correct statement
Franklin Stahl coined the term ‘‘linkage’’
Punnett square was developed by a British scientist
Transduction was discovered by S. Altman
Spliceosomes take part in translation
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