Mendel worked with seven characteristics of pea plants: plant height, pod shape and color, seed shape and color, and flower position and color.
With seed color, he showed that when a yellow pea and a green pea were bred together their offspring plant was always yellow. However, in the next generation of plants, the green peas reappeared at a ratio of 1:3.
To explain this phenomenon, Mendel coined the terms “recessive” and “dominant” in reference to certain traits.
Section-1: General Science - Biology Question - 14
One of the most important functions of norepinephrine is:
One of the most important functions of norepinephrine is its role as the neurotransmitter released from the sympathetic neurons to affect the heart.
An increase in norepinephrine from the sympathetic nervous system increases the rate of contractions in the heart.
Norepinephrine also underlies the fight-or-flight response, along with epinephrine, directly increasing heart rate, triggering the release of glucose from energy stores, and increasing blood flow to skeletal muscle.
Section-1: General Science - Biology Question - 15
Chronic use of alpha blockers or beta blockers can lead to: