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Question
What are the reasons for Mendel’s successes in his breeding experiment?
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Solution
Mendel was successful because:
- He applied mathematics and statistical methods to biology and laws of probability to his breeding experiments.
- He followed scientific methods and kept accurate and detailed records that include quantitative data of the outcome of his crosses.
- His experiments were carefully planned and he used large samples.
- The pairs of contrasting characters which were controlled by a factor (genes) were present on separate chromosomes.
- The parents selected by Mendel were pure breed lines and the purity was tested by self-crossing the progeny for many generations.
RELATED QUESTIONS
Complete the following sentence with appropriate word:
_______ is the ratio of dihybrid cross.
Explain with an example the inheritance of the dihybrid cross. How is it different from monohybrid cross?
Test cross involves
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.
In a dihybrid cross, if you get 9:3:3:1 ratio it denotes that ______.
Two linked genes a and b show 20% recombination. The individuals of a dihybrid cross between ++ /++ × ab/ab shall show gametes ______.
In the F2 generation of a Mendelian dihybrid cross the number of phenotypes and genotypes are ______.
Do genetic combination of mothers play a significant role in determining the sex of a new born?
The Law of independent assortment is applicable for the traits which ______
