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प्रश्न
According to the evolutionary theory, formation of a new species is generally due to
पर्याय
sudden creation by nature
accumulation of variations over several generations
clones formed during asexual reproduction
movement of individuals from one habitat to another
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उत्तर
accumulation of variations over several generations
Explanation -
According to the evolutionary theory, the accumulation of variations (resulting from errors in DNA copying and sexual reproduction) over several generations along with the operation of natural selection leads to the formation of new species.
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संबंधित प्रश्न
Explain Mendel’s dihybrid ratio with the help of any one cross.
Explain with an example the inheritance of the dihybrid cross. How is it different from monohybrid cross?
Test cross involves
In pea plants, yellow seeds are dominant to green. If a heterozygous yellow seed pant is crossed with a green seeded plant, what ratio of yellow and green seeded plants would you expect in the F1 generation?
Select the correct statement from the ones given below with respect to dihydrid cross
Which Mendelian idea is depicted by a cross in which the F1 generation resembles both the parents
Explain the law of dominance in a monohybrid cross.
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.
Findings of Gregor Mendel were rediscovered by the following scientists EXCEPT for ______
A fruit fly exhibiting both male and female traits is ______.
In a dihybrid cross AABB x aabb, F2 progeny of AABB, AABb, AaBB and AaBb occurs in the ratio of ______.
Do genetic combination of mothers play a significant role in determining the sex of a new born?
The ratio of 9 : 3 : 3 : 1 is due to:
Mendel's law of independent assortment is based on F2 ratio of:
Describe the dihybrid cross upto F2 generation as conducted by Gregor Mendel using pure lines of Garden Pea for characters-seed shape and seed colour.
Which scientist is known as the Father of Genetics for establishing fundamental principles of heredity through experiments on pea plants?
What was Gregor Mendel's birthplace?
Which plant species did Mendel primarily use in his hereditary experiments from 1856 to 1863?
Which aspect of Mendel's work was particularly difficult for the scientific community to accept during his lifetime?
