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प्रश्न
Assertion: When the two genes in a dihybrid cross are situated on the same chromosome, the proportion of parental gene combinations is much higher than the nonparental type.
Reason: Higher parental gene combinations can be attributed to crossing over between two genes.
पर्याय
Both A and R are true and R is the correct explanation of A.
Both A and R are true and R is not the correct explanation of A.
A is true but R is false.
A is false but R is true.
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उत्तर
A is true but R is false.
Explanation:
Due to the decreased likelihood of crossing over, parental gene combinations occur more frequently than recombinant forms when two genes are on the same chromosome (linked genes). Higher parental gene combinations, however, result from linkage rather than crossing over. Instead of increasing parental kinds, crossing over increases recombinant types.
संबंधित प्रश्न
What is back cross?
Define Genetics.
A normal green male maize is crossed with albino female. The progeny is albino because ______.
Mendel’s last law is ______.
In a dihybrid cross, F2 phenotypic ratio is 13 : 3. It is case of ______.
Mendel’s Law of independent assortment holds good for genes situated on the ______.
How is the sex of a newborn determined in humans?
Which scientist is known as the Father of Genetics for establishing fundamental principles of heredity through experiments on pea plants?
Which of the following was NOT cited as a reason for the initial rejection of Mendel's work by the scientific community?
In what year was Mendel's work independently rediscovered by multiple scientists?
