Advertisements
Advertisements
प्रश्न
Sahil performed an experiment to study the inheritance pattern of genes. He crossed tall pea plants (TT) with short pea plants (tt) and obtained all tall plants in F1 generation.
When F1 plants were cross-pollinated with plants having tt genes, a total of 800 plants were produced. How many of these would be tall, medium height or short plants? Give the genotype of F2 generation.
Advertisements
उत्तर
- In the cross between Tt X tt, 400 Tall (Tt) and 400 short (tt) plants will be produced.
- 1 Tt : 1 tt
APPEARS IN
संबंधित प्रश्न
Filling the blank based on the given relationship.
3 : 1 Monohybrid : : 9 : 3 : 3 : 1 : ______
What is a dihybrid cross? How did Mendel perform this cross?
Complete the following sentence with appropriate word:
_______ is the ratio of dihybrid cross.
In a test cross involving F1 dihybrid flies, more parental type offspring were produced than the recombination type offspring. This indicates
Identify the statementls that is/are NOT the correct reason/s for Mendel's success in his hybridization experiments.
i. Each factor controlled the single trait and is located on separate chromosomes.
ii. In the pea plant, contrasting characters can be easily recognized.
iii. Mendel carefully recorded the number of plants of each type and expressed his results as ratios.
iv. Mendel performed biochemical assays for identifying the position of 'factors' on chromosome.
Two linked genes a and b show 20% recombination. The individuals of a dihybrid cross between ++ /++ × ab/ab shall show gametes ______.
In a dihybrid cross AABB x aabb, F2 progeny of AABB, AABb, AaBB and AaBb occurs in the ratio of ______.
Mendel’s Law of independent assortment holds good for genes situated on the ______.
How is the sex of a newborn determined in humans?
Do genetic combination of mothers play a significant role in determining the sex of a new born?
