Cytoplasmic sterility is govemed by________________________?

Related Mcqs:

1. Pollen sterility which is controlled by both cytoplasmic and nuclear genes is known as___________________?

   A. GMS
   B. CMS
   C. CGMS
   D. all the above

2. Cytoplasmic genetic male sterility was first discovered by___________________?

   A. Jones and Davies (1944)
   B. Devaries and Correns (1900)
   C. Bruce and Keeble (1908)
   D. Nilson (1900)

3. The term vertical resistance and horizontal resistance were first used by________________________?

   A. Van der plank (1963)
   B. Karpechenko (1927)
   C. Hull (1945)
   D. Correns (1900)

4. Genetic male sterility is controlled by_________________?

   A. Allelic genes
   B. Non alleleic genes
   C. nuclear genes
   D. All the above

5. Male sterility in flowering plants was first reported is__________________?

   A. Bateman (1952)
   B. Stout (1917)
   C. Koelreuter (1763)
   D. Braw baker (1958)

6. Male sterility in flowering plant was first reported by___________________?

   A. Stout (1917)
   B. Koelreuter (1763)
   C. Brewbaker (1810)
   D. Gerstel (1900)

7. Male sterility is absence of_________?

   A. Functional pollen
   B. Sterile pollen
   C. Sterile anther
   D. All of these

   Submitted by: Bahram Rahi

8. A place or area where maximum variability of crop plants is observed__________________?

   A. Genetic diversity
   B. Micro centers
   C. Gene sanctuaries
   D. Centers of diversity

9. In line x tester cross each male is crossed with____________________?

   A. Different sets of females
   B. Few females in a set
   C. Same sets of females
   D. All the above

10. The reason why mutations which are harmful do not eliminated from gene pool is that___________________?

    A. They are recessive and carried by heterozygous individuals
    B. Genetic drift occurs because of a small population in to offsprings
    C. Making possible reproduction in all types of environments
    D. They have future survival value