The kind of genetic variation in happy-face spiders that Dr, Gillespie was studying is called Polymorphism <span>which includes ecology, morphology and the behavior of the happy-face spiders. Polymorphism is a discontinuous genetic variation that results in the occurrence of several different forms or types of individuals among the members of a single species. The happy-face spider exhibits an array of color patterns on the back of its abdomen, sometimes resembles a smiling face. Despite the variation in colors, all of the happy-face spider; have the same anatomical features, interact in the same ways with their environments and with other organisms, they share the same reproductive behaviors and methods of catching insect prey and also freely mate with one another. The study of protein by scientists in the happy-face spiders revealed that different islands had very different levels of variation which means the dispersal between the island is not very common. </span>
Answer:
Elongated shape
Explanation:
Centrifugation separates molecules on the basis of angular motion.
Due to spherical shape, the value of 'f' is lesser for a spherical protien than the rod shaped one.
Hence the sedimentation coefficient for an elongated protien is 2.6S while htat of a spherical protien is 4.31S.
Hence its elongated shape results in slow centrifugation.
Some of the important principles of centrifugation are as follows :
- The greater the mass, the more is the sedimentation rate i-e the one with greater mass will move down more rapidly as compared to the one with les mass.
- Shape of particles also effect it, the rounder the particle, the lower frictional coeeficient.
- Density of particles
- Density of fluid
Answer:
C. top soil has more organic matter.
Explanation:
It's more fertile than subsoil, due to having more organic matter and because fertilizers are usually added to the topsoil only.
