Question

In guinea pigs, white coat (w) is recessive to black coat (W) and wavy hair (v) is recessive
to straight hair (V). A breeder crosses a guinea pig that is homozygous for white coat and wavy
hair with a guinea pig that is black with straight hair. The F1 are then crossed with guinea pigs
having white coats and wavy hair in a series of testcrosses. The following progeny are produced
from these testcrosses:

Answer 1

Answer:

Explanation:

A poster designed by Sangeeth for a poster designing competition based

on the message ‘save earth from global warming’, is presented above. What

inferences can you formulate from this poster?

You have heard about global warming. It is a dangerous phenomenon

which leads to the rise in earth’s temperature. The main reason for global

warming is the increase in the level of carbon dioxide in the atmosphere.

Plants can resist this to a certain extent. Analyse illustration 1.1 given below

based on the indicators and prepare notes in the Science diary.