MCQ on Genetics and Plant Breeding for various Agriculture Exams Part - 4

1. From 40 inbreds, how many three way cross hybrids is possible?
       A. 29650
       B. 29660
       C. 29640
       D. 29620

2. If a virus has 23% adenine, 31% Guanine, 23% Cytosine and 17 % Uracil, then the virus may be
       A. ssDNA
       B. dsDNA
       C. ssRNA
       D. dsRNA

3. According to Hardy- Weinberg equilibrium, if the frequency of the two alleles at the gene being studied are 0.6 and 0.4, the genotype frequency of heterozygous, will be
       A. 0.80
       B. 0.64
       C. 0.48
       D. 0.32

4. All members of an isolated village were genotyped for a particular RFLP. Of the 1000 individuals, 200 were homozygous for the presence of the restriction site, 700 were heterozygous and 100 were homozygous for its absence. What is the frequency of the "restriction site present" allele, p?
       A. 0.45
       B. 0.50
       C. 0.55
       D. 0.60

5. BLAST-P compares
       A. DNA sequence with amino acid sequence
       B. DNA sequence with RNA sequence
       C. An amino acid sequence with protein sequence
       D. Protein sequence with RNA sequence

6. If 30% of DNA of an organism is made up of Adenine, the expected Purine to Pyrimidine ratio is
       A. 1.20
       B. 1.00
       C. 0.80
       D. 0.75

7. In a digenic F2 segregation with independent assortment, what shall be the total number of genotypes which are heterozygous for one or two locus
       A. 4
       B. 8
       C. 12
       D. 16

8. If a plant has 1000 total loci distributed in the genome and has 2n=20 chromosomes. What shall be the average number of genes per one linkage group
       A. 50
       B. 100
       C. 150
       D. 200

9. If a genotype bred elsewhere and introduced to a newer place without any genetic modification for commercial cultivation it is called as
       A. Secondary Introduction
       B. Primary Introduction
       C. Tertiary Introduction
       D. Acclimatization

10. Two essential features for a chromosome to survive are
        A. Telomere & Nucleosome
        B. Telomere & Centrosome
        C. Telomere & Centromere
        D. Telomere & Chromatin