Which of the following traits shows expression in only homozygous condition?
1. Yellow seed
2. Inflated pod
3. Axial flower
4. Wrinkled seed
In the given below figure what does (a) and (b) represent
1. GAG, Glumatic acid
2. GUG, Valine
3. GAG, Valine
4. GUG, Glumatic acid
Choose odd one out with respect to chromosomal disorder
1. Down's syndrome
2. Klinefelter's syndrome
3. Turner's syndrome
4. Thalassemia
Morgan worked with the tiny fruit flies - Drosophila melanogaster, which were suitable for genetical studies, as
a. They could be grown on simple medium
b. They complete their life cycle in about two weeks
c. Single mating could produce a large number of progeny flies
d. No clear cut sexual dimorphism is found
1. Only d is incorrect
2. Both a and d are incorrect
3. Only b is correct
4. Both c and d are incorrect
Match the following
Column-l Column-ll
a. Haemophilia i. Rudimentary ovaries
b. Sickle cell anaemia ii. X-linked recessive
c. Turner's syndrome iii. Gynaecosmastia
d. Klinefelter's iv. Autosomal recessive
syndrom
a. a(ii), b(iv), c(i), d(iii)
b. a(ii), b(iv), c(iii), d(i)
c. a(iv), b(ii), c(i), d(iii)
d. a(iv), b(i), c(ii), d(iii)
Who noticed that the behaviour of chromosomes is parallel to the behaviour of genes?
1. Temin and Baltimore
2. Correns and Tschermak
3. Beadle and Tatum
4. Sutton and Boveri
Experiment verification of the chromosomal theory of inheritance was given by
1. Sutton and Boveri
2. Thomas Hunt Morgan
3. de Vries
4. Mendal
In human ABO group system ________ different alleles allow the possibility of _______ different types of genotypes in population.
1. 3, 4
2. 2, 4
3. 3, 6
4. 6, 3
The phenotype of an individual may be affected if the modified allele produces
A. The normal/less efficient enzyme
B. No enzyme at all
C. A non-functional enzyme
1. Only A is correct
2. Only C & A are correct
3. Only B is correct
4. B & C are correct
Ability of a gene to have multiple phenotypic effects is known as
1. Co-dominance
2. Pleiotropy
3. Multiple allelism
4. Incomplete dominance