Select the correct statement:

  • Franklin Stahl coined the term "linkage".

  • Punnett square was developed by a British scientist.
  • Spliceosomes take part in translation.
  • Transduction was discovered by S. Altman.

Which of the following pairs is wrongly matched?

  • Starch synthesis in pea: Multiple alleles

  • ABO blood grouping: Co-dominance
  • XO type sex determination: Grasshopper
  • T.H Morgan: Linkage

A disease caused by an autosomal primary non-disjunction is:

  • Klinefelter's Syndrome

  • Turner's Syndrome

  • Sickle Cell Anemia

  • Down's Syndrome

Which of the following characteristics represent 'Inheritance of blood groups' in humans? 

a. Dominance

b. Co-dominance

c. Multiple allelism

d. Incomplete dominance

e. Polygenic inheritance

  • b, c and e

  • a, b and c

  • b, d and e

  • a, c and e

A woman has an X-linked condition on one of her X chromosomes. This chromosome can be inherited by:-
  • Only daughters
  • Only sons
  • Only grandchildren
  • Both sons and daughters


Match the terms in Column I with their description in Column II and choose the correct option. 

 
  • A-2 B-3 C-4 D-1
  • A-4 B-1 C-2 D-3
  • A-4 B-3 C-1 D-2
  • A-2 B-1 C-4 D-3

A cell at telophase stage is observed by a student in a brought from the field. He tells his teacher that this cell is not like other cells at telophase stage. There is no formation of cell plate and thus the cell is containing more number of chromosomes as compared to other dividing cells. This would result in
Which of the following statements is not true for cancer cells in relation to mutations?

 

The movement of a gene from one linkage group to another is called

 

An abnormal human baby with 'XXX' sex chromosomes was born due to :

A man with blood group 'A' marries a woman with blood group 'B'. What are all the possible blood groups of their off springs?

Which one of the following symbols and its representation, used in human pedigree analysis is correct?

 
 
 
 

If a chiasma forms between the loci of genes A and B in 20% of the tetrads of an individual of genotype AB/ab, the percentage of gametes expected to be Ab is:

Phenotype of an organism is the result of:

Both sickle cell anaemia and Huntington’s chorea are:

In Antirrhinum (Snapdragon), a red flower was crossed with a white flower and in F1 generation, pink flowers were obtained. When pink flowers were selfed, the F2 generation showed white, red and pink flowers. Choose the incorrect statement from the following:

Select the incorrect statement.

What map unit (Centimorgan) is adopted in the construction of genetic maps?

The frequency of recombination between gene pairs on the same chromosome as a measure of the distance between genes was explained by:

What is the genetic disorder in which an individual has an overall masculine development gynaecomastia, and is sterile?

Assertion: Dominance is not always an autonomous feature of gene or its product.

Reason: Occasionally a single gene product may produce more than one effects.

A heterozygous plant produces:

What is the F2 phenotypic ratio in cases of incomplete dominance?

Occasionally, a single gene product may produce more than one effect. Such a gene is said to be:

‘When two pairs of traits are combined in a hybrid, segregation of one pair of characters is independent of the other pair of characters’. This is the statement of:

Mendelian disorders are mainly determined by:

The point mutation leading to sickle cell anaemia occurs:

In cases of Phenylketonuria:

Monosomy means:

Match the items of Column - I with Column - II :

 

Column-I

 

Column-II

(a)

XX-XO    method    of

sex determination

(i)

Turner's

syndrome

(b)

XX-XY  method      of

sex Determination

(ii)

Female

heterogametic

(c)

Karyotype-45

(iii)

Grasshopper

(d)

ZW-ZZ    method    of

Sex Determination

(iv)

Female

homogametic

Select the correct option from the following:
0:0:1


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Practice Botany Quiz Questions and Answers