Genetics (History, Monohybrid Cross) Test - Botany, Class 12 - Class 12 MCQ

Genotype - phenotype concept was first produced by :-

How many types of gametes are expected from the organism with geno type AABBCC:-

One of the following did not constitute the seven contrasting pairs of characters noticed by mendel

The scientist who worked on garden pea before mendel was :-

The plant which made Hugo -de vries famous is :-

If 3n is the theoretically possible number of different genotypes (when n = the number of chromosome pairs with each carrying one pairs of heterozygous alleles), the different genotypes produced by pea plant is :–

In the Punnet square given above, the genotype of the female parent and male parents respectively:-

A trihybrid cross is made between two plants with genotypes A/a B/b C/c how many offsprings of such cross will have a genotype a/a b/b c/c –

How is the arrangement of Mendel’s selected seven characters on four chromosomes :–

Out of three characters on chromosome no. 4, two characters indicate linkage and not mentioned by Mendel. These characters were –

 Mrs. verma has a auto somal gene pair 'Bb' and she contain x-linked gene 'd'. What is the percentage of gamete which contain 'bd' genes :-

When two different genotypes produce the same phenotype due to environmental difference, then each one is known as :-

. The Punnett square shown below represents the pattern of inheritance in dihybrid cross when yellow (Y) is dominant over white (y) and round (R) is dominant over wrinkled (r) seeds

   A plant of type ‘H’ will produce seeds with the genotype identical to seeds produced by the plants of :–

1:1:1:1 ratio shows :-

If a heterozygous tall plant is crossed with a homozygous dwarf plant then what shall be the percentage of dwarf in offspring :-

If a homozygous tall plant is crossed with a dwarf plant, what shall be the ratio of plants in offsprings :-

In a plant gene 'A' is responsible for tallness and its recessive allele 'a' for dwarfness and 'B' is responsible for red flower colour and it's recessive allele 'b' for white flower colour. A tall and red flowered plant with genotype AaBb crossed with dwarf and red flowered (aaBb). What is the percentage of dwarf-white flowered offspring of above cross :-

In rabbit black skin (B) is dominant over brown skin (b) and short hair (S) is dominant over long hair (s).If homozygous black–short haired male is crossed with a homozygous brown–long haired female. All F₁–offspring are heterozygous black–short haired.F₁ male crossed with F₁–female. In F₂ generation what is the percentage of homozygous black–short haired offspring :-

 With increasing age the linkage becomes :-

Coupling and Repulsion theory produced by :-

In which type of inheritance the results are affected by reciprocal cross :-

If there were only parental combinations in F2 of a dihybrid cross then mendel might have discovered :-

Plants similar to mother plant can be obtained from

Linkage discovered in Drosophila by :-

Mendelian dihybrid and dihybrid with linkage are respectively realated with how many chromosomes :-

 Incomplete dominance occurs in :-

A dihybrid plant with incomplete linkage on test cross may produce how many types of plants:-