Download Biologgy Assignment 10th Hereditry

Very Short Answers (1 Mark)
1. Define variation
2. What is monohybrid cross?
3. What are genes?
4. If an individual has XX chromosome [22 + XX] will that individual be male or female.
5. Which plant Mendel had choose for his experiments.
6. Name the branch of science that deals with Heredity and variation
7. Name two human traits which show variation.
8. What will you get in F1 generation when a pea plant having violet coloured flowers is crossed
with white coloured flowers? Give reason.
9. Who is the father of Genetics?
10. Write the scientific name of men and garden pea.
11. Where can be the Genetic foot print of human traced?
Short Answers (2 Marks)
1. Differentiate between acquired and Inherited traits? Give example of each.
2. Explain what are fossils? How the age of fossils be determined
3. What is speciation? What factors lead to formation of a new species.
4. Explain the mechanism of sex determination in humans.
5. Differentiate between homologous and analogous organs by giving examples.
6. Define inheritance. What are the units of inheritance
7. What is genetic drift? How it contributes to the formation of new species
8. Explain monohydrid cross by taking tall and dwarf plants. Mention the phenotypic and
genotypic ratio of F1 and F2 off springs.
9. How does creation of variations in a species promote survival?
10. Why mendel selected pea plants for conducting his experiments on inheritance?
11. Why father is responsible for the sex of the new born baby?
12. Why acquired traits not passed on to their progeny?
Short Answer (3 Marks)
1. Describe any three ways in which individuals with a particular trait may increase in a
population.
2. Name two fossils. What do fossil tells us about the process of evolution?
3. What are the important sources which provide evidence for evolution? Explain them with
example.
Long Answer (5 Marks each)
1. Explain the process of artificial selection by taking the example of wild cabbage plant.
2. Explain about the human evolution.
3. What are dominant and recessive traits? How do Mendel’s experiment show that traits may
be dominant or recessive? Illustrated with an example?
4. How do mendel’s experiments show that traits are inherited independently? Explain with a
Dihybrid cross.