Maize has 10 pairs of chromosomes. how many linkage groups will be present if all the genes are mapped__________________?

Related Mcqs:

1. When a wheat variety with red kernels (homozygous for two non allelic and independent dominant genes) is crossed with white kenneled wheat (homozygous for two recessive non allelic independent genes), the phenotypic ratio in the F2 generation would be________________?

   A. 9:3:3:1
   B. 9:7
   C. 9:9:9:3:3:3:1
   D. 1:4:6:4:1

2. The suppression of the action of a gene or genes by a gene or genes not allelomorphic to these suppressed is known as __________________?

   A. Episode
   B. Co dominance
   C. Epistasis
   D. Dominance

3. A rearrangement of a group of genes in a chromosome in such a way that their order in the chromosomes is reversed is known as _____________________?

   A. Inversion
   B. Conversion
   C. Recessive gene
   D. Realignment

4. If the cell of an organism (heterozygous) for two pairs of genes represented by Aa, Bb, undergoes meiosis then the possible genotype of gametes are________________?

   A. AB, ab
   B. Ab, ab
   C. AB, Ab, aB, ab
   D. Data insufficient

5. If the haploid number of chromosomes in a plant is 12, then the number of chromosomes in monosmic is_________________?

   A. 12
   B. 24
   C. 22
   D. 23

6. If diploid chromo me number in flowering plant is 8 then 4 chromosomes will be present in_________________?

   A. Endosperm cell
   B. Leaf cells
   C. Cotyledonary cell
   D. Synergids

7. In maize source of high lysine is___________________?

   A. Opaque 2
   B. Proline
   C. Gang as
   D. African tall

8. When an albino plant of maize (female) is crossed with normal green plant (male) all plants in the progeny are albino because___________________?

   A. Albinism is dominant over green characters
   B. Green plastids of male parent become nitrated
   C. Plastids are inherited through maternal parents
   D. Crossing over results in structural changes in green plastids

9. As a result of linkage and crossingover _____________________?

   A. Chromatids become chromosomes
   B. Nuclear division come to close
   C. Chromosomes become half in number
   D. Exchange of chromosomal material

10. Linkage of hereditary units was discounted by__________________?

    A. W. Batson and B.C Pun net
    B. T.B. Morgan and G. Mendel
    C. W.S. Sutton and K. R. Porter
    D. C.B. Bridges and G.H. Shull