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प्रश्न
Explain the statement of Law of dominance is not universal.
उत्तर
- According to the law of dominance, when two homozygous individuals with one or more sets of contrasting characters are crossed, the alleles (characters) that appear in F1 are dominant and those which do not appear in F1 are recessive.
- In many cases, the dominance is not complete or absent. This can be explained by two deviations of Mendel’s law of dominance: Incomplete dominance and codominance. Thus, the law of dominance is significant and true, but it is not universally applicable.
संबंधित प्रश्न
Define the following:
Heterozygous
Explain the following terms:
Laws of Inheritance
Predict the genotype and phenotype of the following cross in pea.
TT x Tt
(Capital letters show dominance)
Choose the correct answer:
If a homozygous tall plant is crossed with a heterozygous tall plant, the proportion of tall progeny would be ____________
Why law of segregation is also called the law of purity of gametes?
Who is regarded as the father of genetics?
Read the following and answer from given below:
According to Mendel, one gene controls the expression of one character only. The ability of a gene to have multiple phenotypic effects because it influences a number of characters are an exception. The gene has multiple phenotypic effects because its ability to control two or more characters can be seen in cotton. In cotton, a gene for the lint also influences the height of the plant, size of the ball, number of ovules, and viability of seeds.
Which of the following statements is not correct regarding genes with multiple phenotypic effects?
Enlist the steps of controlled cross pollination. Would emasculation be needed in a cucurbit plant? Give reasons for your answer.
A person has to perform crosses for the purpose of studying inheritance of a few traits/characters. What should be the criteria for selecting the organisms?
