Suppose that out of 1000 offspring’s in the generation of a dithered cross, 748 are tall and hairy, 6 are tall and smooth, 4 are short and hairy and 242 are short and smooth. what is the explanation for this kind of ratio ?

Related Mcqs:

1. If a pure tall plant is crossed with a pure dwarf one, the ratio of tall pure dwarf in the F 2 generation after selling F1 plant will be___________________?

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

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. The offspring of a cross between twp individuals differing in at least one set of characters is called__________________?

   A. Polyploidy
   B. Mutant
   C. Variant
   D. Hybrid

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. In random mating population gene frequencies remain constant generation after generation in the absence of__________________?

   A. Mutation
   B. Selection
   C. Migration
   D. Random drift

6. The crossing of a yomozygous tall plant and a homozygous dwarf plant would yield plants in the ratio of_________________?

   A. 2 tall: 2 dwarf
   B. All homozygous dwarf
   C. All the heterozygous tall
   D. One homozygous tall, one homozygous dwarf, two heterozygous tall

7. If the offspring of F, (blue) is crossed with white male parent the result will be______________________?

   A. All blue
   B. All white
   C. All black
   D. Half blue and half white

8. Parthenogenetic reproduction in which both male and female offspring are produced from unfertilized eggs:

   A. Amphitoky
   B. Anholocyclic
   C. Ambulacrum
   D. None of the above

   Submitted by: Shafiq Rehman

9. 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

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