Question
"Migration may enhance or blurr the effects of selection". Comment.
✓
Answer
Migration may cause enrichment of the gene pool of such alleles that are being selected for, or annul the effects of selection through replenishment of alleles that were selected against by nature.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
What are we referring to? When we say 'simple organisms' or 'complex organisms'.
Name the two most commonly employed hosts and the vectors for human gene cloning.
Name the types of succession of plants based on the nature of habitat.
Name the technology used in micropropagation of plants. Write the genetic significance of the plants raised through this technique. Give two cxamples, where this technology is commercially exploited.
Identify A, B, C and name the scientists who carried out the experiment given in the diagram.
What is the significance of progestogen oestrogen combination as a contraceptive measure?
Complete the following chart and rewrite :
| Sr. No. | Type | Examples |
| 1 | Vulnerable species | Clouded leopard, Musk deer |
| 2 | Great Indian Bustard, Hawiian monk seal | |
| 3 | Three banded armodillo (Brazil), Short eared rabbit (Summatra) |
What are induced mutation? Give one example each of physical and chemical mutagen.
Describe how biotechnology has helped in producing more nutritionally balanced milk. Write the full forms of the following:
- GEAC
- PKU
Classify the following white blood corpuscles given below as per Column A and complete Column ‘B’. Select from the given options:
(i) Eosinophils
(ii) T-lymphocytes
(iii) Neutrophils
(iv) Basophils
(v) B-lymphocytes
(vi) Monocytes
(i) Eosinophils
(ii) T-lymphocytes
(iii) Neutrophils
(iv) Basophils
(v) B-lymphocytes
(vi) Monocytes
| Column A | Column B |
| (1) Phagocytic cells | ———— |
| (2) Cells involved in giving immune response | ———— |
| (3) Cells that increase during allergic and anti-allergic responses | ———— |