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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
What is a dihybrid cross? How did Mendel perform this cross?
State Mendel’s law of Independent Assortment.
Give Technical Term:
The ratio of offspring on F2 generation in a dihybrid cross.
Complete the following sentence with appropriate word:
_______ is the ratio of dihybrid cross.
Complete the following sentence with appropriate word:
A character that is suppressed is _________.
The physical expression of a gene is called ______.
Under which conditions does the law of independent assortment hold good and why?
The genotype of a plant showing the dominant phenotype can be determined by
Select the correct statement from the ones given below with respect to dihydrid cross
Among the following characters which one was not considered by Mendel in his experimentation pea?
Define Genetics.
The process of mating between closely related individuals is ______.
Two genes ‘A’ and ‘B’ are linked. In a dihybrid cross involving these two genes, the F1 heterozygote is crossed with homozygous recessive parental type (aa bb). What would be the ratio of offspring in the next generation?
Do genetic combination of mothers play a significant role in determining the sex of a new born?
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.
When two hybrids rrTt and Rrtt are gassed, the phenotype ratio of offspring should be:
In the Mendelian dihybrid cross when heterozygous round yellow is self grossed, round green offsprings are represented by the genotype.
The Law of independent assortment is applicable for the traits which ______
Mendel's law of independent assortment is based on F2 ratio of:
