Mendel concluded that pea traits like flower color were determined by separate units. From the results, Mendel proved that all traits do not blend. For instance, purple flowers mixed with white flowers did not produce pink flowers.
Since all of the offspring have the purple phenotype, this tells us that the purple allele is dominant to the white allele. ... This means that 75% of the offspring displayed the dominant phenotype of purple flowers, and 25% displayed the recessive phenotype of white flowers.
Two pea plants, both heterozygous for flower color, are crossed. The offspring will show the dominant purple coloration in a 3:1 ratio. Or, about 75% of the offspring will be purple.
Mendel's Results
Mendel noted the ratio of white flowered plants to purple-flowered plants was about 3:1. That is, for every three purple-flowered plants, there was one white flowered plant.
Answer:
A- Tunica intima, tunica media, tunica adventitia.
Tunica intima
Is the internal layer of the arterial wall, it is a sqaumous epithelium which is surrounded by connective tissue and elastic fibre, it provides a one way flow of blood.
Tunica media
The middle layer is made of smooth muscles and is the thickest layer that changes the arteries diameter controlling blood pressure and flow.
Tunica adventitia
A dense outer layer of the arterial wall made of connective tissue. It consist of collagen fiber and provides protection to the blood vessel.
The resulting offspring inherit one half of their traits from each parent. The process where haploid sex cells are created from diploid parents is called meiosis, and it occurs only in the reproductive organs.
<span>Charles Darwin's theory of evolution emphasized natural selection and survival of the fittest. Natural selection basically means lifeforms evolve certain traits that help them survive better in comparison to similar lifeforms. Survival of the fittest goes hand in hand with natural selection and means those traits evolved will help the strongest and best survive.</span>