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प्रश्न
In Mendel’s experiments, tall pea plants (T) are dominant over dwarf pea plants (t).
What is a Dihybrid Cross?
उत्तर
Dihybrid cross is a cross between 2 different lines/genes that differ in two observed traits.
APPEARS IN
संबंधित प्रश्न
Give appropriate biological/technical terms for the following:
The type of immunity that exists in our body due to our genetic makeup.
A homozygous tall plant (T) bearing red coloured (R) flowers is crossed with a homozygous dwarf (t) plant bearing white (r) flowers :-
(i) Give the genotype and phenotype of the plants of F1 generation.
(ii) Mention the possible combinations of the gametes that can be obtained from the F1 hybrid plant.
(iii) State the Mendel’s law of Independent Assortment.
(iv) Mention the phenotypes of the off springs obtained in F2 generation.
(v) What is the phenotypic ratio obtained in F2 generation?
Predict the genotype and phenotype of the following cross in pea.
TtRr x TtRr
(Capital letters show dominance)
Give the ratio of phenotype of these crosses.
Give Reason:
Discontinuous variations are inheritable.
RR (Red) Antirrhinum is crossed with white (rr) one. Offspring (Rr) are pink. This is an example of ______.
According to Mendel alleles have the following character ______.
Dominant allele refers to ______.
Select the group which shares maximum number of common characters
Mendel blended his knowledge of science and mathematics to keep count of the individuals exhibiting a particular trait in each generation. He observed a number of contrasting visible characters controlled in pea plants in a field. He conducted many experiments to arrive at the laws of inheritance.
- What do the F1 progeny of tall plants with round seeds and short plants with wrinkled seeds look like?
- Name the recessive traits in the above case.
- Mention the type of the new combinations of plants obtained in F2 progeny along with their ratio, if F1 progeny was allowed to self-pollinate.
OR
If 1600 plants were obtained in F2 progeny, write the number of plants having traits:
- Tall with round seeds.
- Short with wrinkled seeds.
Write the conclusion of the above experiment.
