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प्रश्न
What is a species?
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उत्तर
A species is a group of organisms that can produce fertile individuals through natural reproduction.
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संबंधित प्रश्न
Explain the following:- Speciation
Name one reptile in given case where higher incubation temperature leads to the development of female progeny.
A plant with two 'small' genes breeds with a plant with two 'tall' genes to produce :
(a) small plants and tall plants in the ratio 1 : 3
(b) all small plants
(c) all tall plants
(d) tall plants and small plants in the ratio 3 : 1
The palisade cells of a species of plant contain 28 chromosomes. How many chromosomes will there be in each gamete produced by the plant?
A plant has two varieties, one with red petals and the other with white petals. When these two varieties are cross-pollinated, all the offsprings have red petals?
(a) Which gene is dominant?
(b) Choose suitable letters to represent the two genes.
Name the scientist who gave the theory of evolution.
Name the famous book written by Charles Robert Darwin.
Fill in the following blank with suitable word:
Broccoli has evolved from .............. by the process of artificial selection.
Give two examples of plant species and two of animals.
State the various factors which could lead to the formation of new species.
Will geographical isolation be a major factor in the speciation of a self-pollinating plant species? Give reason for your answer.
The theory of evolution of species by natural selection was given by ______
New species may be formed if:
- DNA undergoes significant changes in germ cells
- chromosome number changes in the gamete
- there is no change in the genetic material
- mating does not take place
Define speciation according to A.E. Emerson.
In the following Question, the Assertion and Reason have been put forward. Read the statements carefully and choose the correct alternative from the following:
Assertion: Speciation is the reproductive isolation amongst once interbreeding population.
Reason: Genetic drift, Natural selection, and Severe DNA change can cause speciation.
What is the evolutionary process by which new, distinct species are formed?
Which set contains the five main racial groups of human beings?
What is reproductive isolation?
