Answer:
B
Explanation:
Mendel discovered that an organism receives two forms of a gene called allele from each parent. This alleles combine to form the genotype of that organism, which in turn determines the phenotype.
Mendel crossed purebreeding plants that produced only tall and short plants respectively. He got an all tall F1 offspring. He then self-crossed the F1 offsprings to get a phenotypic ratio of 3:1 in the F2 offsprings. He discovered that the tall allele was dominant over the short allele for the height gene in pea plants. This is because the tall alleles masked the expression of the short allele in the F1 generation making them all exhibit tall traits.
The F1 are regarded as hybrids or heterozygotes because they were a mixture or combination of two different alleles. This mixture was confirmed in the F2 offsprings that produced 3 tall plants and 1 short plant, showing that the recessive allele was still present but masked in the heterozygotic combination.
Quit smoking, The process of giving up tobacco use is known as smoking cessation, also referred to as quitting or halting. Nicotine, which is addictive and can lead to dependency, is present in tobacco smoke. As a result, withdrawal from nicotine frequently makes quitting difficult.
The first three days after quitting, when symptoms normally reach their climax, are followed by a period of around two weeks. It gets a little simpler when you get past those difficult first few weeks. What aids? Before quitting, you should start to create arrangements. What occurs when a smoker stops? Your breathing and capacity for exercise will start to dramatically improve.
Your chance of having a heart attack is greatly reduced. Your risk of developing laryngeal, throat, and mouth cancer is halved, and your risk of stroke is reduced. When compared to a smoker, your risk of acquiring lung cancer is decreased by half.
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The most widely used renewable energy source is hydropower. While this has many benefits, it also causes many environmental concerns when the dams get built.
Think of tap water and how all those materials get in it like Fluoride
