Red (RR) is crossed with white (ww). All the (Rw) offsprings are pink this is an indication that the R gene is_________________?

Related Mcqs:

1. Red flower pea plant is crossed with the white flowered pea plant, F1 is red; with flower color is ______________________?

   A. Dominant
   B. Recessive
   C. Non-genetic
   D. Unexpressive

2. When red tall plant is crossed with dwarf white plant all the plants of F, are found to be tall red. which of the following ratio will be available when a test cross is made_________________?

   A. 3:1
   B. 1:2:3
   C. 1:1:1:1
   D. 1:2:1

3. 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

4. From a single ear of corn a farmer planted 300 kernels which produced 225 tall and 75 short plants. the genotype of these offsprings are most likely to be_____________________?

   A. TT and Tt only
   B. TT and tt only
   C. Tt and Tt only
   D. TT Tt and tt

5. A gene which enhances the natural mutations rate of another gene in the same genome is kanown as___________________?

   A. Mutable gene
   B. Mutator gene
   C. Recepror gene
   D. Articulator gene

6. Concept of gene for gene hypothesis was developed in____________________?

   A. Linseed
   B. Oat
   C. Gram
   D. Tomato

7. Gene for gene hypothesis was proposed by__________________?

   A. Nelson (1973)
   B. Flor (1956)
   C. Robinson (1971)
   D. Vander plank (1963)

8. 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

9. In a population gene frequencies remain constant when there is_________________?

   A. Iubreeding
   B. Out breeding
   C. Random mating
   D. Selective mating

10. In a monohybrid cross, 2 heterozygous individuals were crossed, phenotypic ratio came to be (2:1), it is due to__________________?

    A. Dominant lethal genes in heterozygous individuals
    B. Dominant lethal genes in homozygous individuals
    C. Dominant epistasis
    D. None of the above