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प्रश्न
Name two human traits which show variation.
उत्तर
Human height and skin colour are two traits which show variation.
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संबंधित प्रश्न
What factors could lead to the rise of a new species?
"Natural selection and speciation leads to evolution." Justify this statement.
List four factors responsible for speciation.
Which of the following may be used to obtain an F2 generation?
(a) allowing flowers on a parent plant to be self-pollinated
(b) allowing flowers on an F1 plant to be self-pollinated
(c) cross-pollinating an F1 plant with a parent plant
(d) cross-pollinating two parent plants
What name is given to the sequence of gradual changes over millions of years in which new species are produced?
Give an example of characteristics being used to determine how close two species are in evolutionary terms.
Give two examples of plant species and two of animals.
Will geographical isolation be a major factor in the speciation of a self-pollinating plant species? Give reason for your answer.
Cichlid fishes in Lake Victoria are representatives of ______ type of speciation.
Complete the following chart:
| Animals | Connecting link between | |
| (1) | Balanoglossus | ______ |
| (2) | ______ | Annelida and Arthropoda |
| (3) | Lung fishes | ______ |
| (4) | ______ | Reptiles and mammals |
| (5) | Seymouria | ______ |
| (6) | Fishes and Amphibia |
