MCQ on Biometrical Genetics / Quantitative Genetics Part -5 For ARS NET / SRF Exams

 

1. The degree of statistics in which variances and co-variances are used for the measurement of all types of parameters is known as**

(i) First degree statistics

(ii) Second degree statistics

(iii) Third degree statistics

(iv) None of these

2. The degree of statistics which includes complex interactions like kurtosis and skewness is known as**

(i) First degree statistics

(ii) Second degree statistics

(iii) Third degree statistics

(iv) None of these

3. As the number of genes governing a trait becomes smaller, its improvement becomes
(i) Easier
(ii) Difficult
(iii) Not possible
(iv) Highly difficult

4. Choose the correct statement
(i) Development of a character or trait is the product of a large number of biochemical reactions
(ii) Genetic variability is a prerequisite for crop improvement
(iii) With an advance in the segregating generations, the variability within individual plant progenies is reduced
(iv) All of these

5. Who confirmed that quantitative characters are governed by many genes by studying the inheritance of corolla length in Nicotiana longiflora
(i) Yule (1906)
(ii) East (1916)
(iii) Nilsson-Ehle (1908)
(iv) Mather (1941)

6. Who first suggested that many genes with small and similar effects could produce continuous variation
(i) Yule (1906)
(ii)  East-(1916)
(iii) Nilsson- (1908)
(iv) Mather (1941)

7. Who suggested that true quantitative characters are governed by many genes with small and cumulative effect
(i) Yule (1906)
(ii) East (1916)
(iii) Nilsson-Ehle (1908)
(iv) Mather (1941)

8. Experimental evidence for the existence of polygenes was provided by
(i) Yule
(ii) East
(iii) Nilsson-Ehle
(iv) Mather

9. Choose the correct statement
(i) Genetic variation in a character is the pre-requisite for any improvement in the trait
(ii) Land races have more genetic diversity, wider adaptability, broad genetic base and high degree of resistance to biotic and abiotic stress
(iii) Existence of phenotypic differences among the different individuals of a population is called as variation
(iv) All of these