Heredity And Evolution

Question

How do Mendel’s experiments show that
Traits may be dominant or recessive?

Solution

In Mendel's experiment, all the F₁ generation were tall and no dwarf plant was seen while in F₂ generation the dwarf plant reappeared. The experiment showed that a single copy of ‘T’ is enough to make the plant tall, while both copies have to be ‘t’ for the plant to be short. Traits like ‘T’ are called dominant traits, while those that behave like ‘t’ are called recessive traits. Thus Mendel's experiment showed that the traits can be dominant or recessive.

Some More Questions From Heredity and Evolution Chapter

State the basic requirement for sexual reproduction? Write the importance of such reproductions in nature.

Distinguish between the acquired traits and the inherited traits in tabular form, giving one example for each.

Explain with the help of an example each, how the following provides evidence in favour of evolution:
Homologous organs

Explain with the help of an example each, how the following provides evidence in favour of evolution:
Analogous organs

Explain with the help of an example each, how the following provides evidence in favour of evolution:
Fossils