Answer:
Some substance in the infectious S strain could change the harmless R strain into the more lethal form.
Explanation:
These first type of experiments where crucial to advance in DNA knowledge.
In one experiment, they treated the material with enzymes that destroy all proteins. This is important because scientist notice that there was something else that was causing the strain to change into a lethal form and was heritable (DNA). Know a days we know that plasmids are responsible for such transformation.
<u>Answer: </u>
Option(D)
Powder Alarm
<u>Explanation: </u>
The powder alarm was a considerably prominent reaction to the orders of General Gage, royal governor to the British soldiers to remove the gunpowders from the magazine.
In response to this action, amid rumours that blood had been shed, alarm scattered to Connecticut and even beyond through the countryside, and American Patriots sprung into action, fearing that war was at hand.
Answer:
D) Pisum sativum (pea plant).
Explanation:
Gregor Mendel, through his work on pea plants, discovered the fundamental laws of inheritance. He deduced that genes come in pairs and are inherited as distinct units, one from each parent. Mendel tracked the segregation of parental genes and their appearance in the offspring as dominant or recessive traits.
Why do melting ice caps make Earth warmer?
The correct answer is C. Albedo decreases.
When the albedo is lower, more radiation from the Sun gets absorbed by the planet resulting in rise of temperature. When the snow covered area warms up and melts, the albedo goes down and more sunlight is absorbed in that area and the temperatures increase.
