Answer:
B) 1/2 X 1/2 = 1/4
Explanation:
It happens when both the parents are heterozygous for the trait. The cross related to this result is shown as under:
Father Mother
Bb x Bb
/ \ / \
Gametes: B b B b
| | | |
Probability: 1/2 1/2 1/2 1/2
The probability of formation of 'b' gamete from father is 1/2 because there are only two gametes 'B' and 'b' and out of these two one will be assorted as 'B' and another one as 'b' and from mother also the probability of formation of 'b' gamete is 1/2.
Now the assortment of gametes with each other is an independent event i.e. any gamete from father can fuse with any gamete of mother so the overall probability of formation of 'bb' genotype will be 1/2 x 1/2 = 1/4.
This is because the melanocytes are located in the stratum basale. Lighter-skinned people usually have low basal levels, and exposure to UV radiation causes an increase which makes skin darker.
Answer:
The Chemical Coupling:
A coupling reaction in organic chemistry is a general term for a variety of reactions where two fragments are joined together with the aid of a metal catalyst.
The Conformational Coupling:
The basic idea, as originally proposed by Robin Irvine, is that stimulation of the IP3 receptor (IP3R) by store emptying induces a conformation change that is transferred to the channel in the plasma membrane through a direct protein-protein interaction (3)
The Chemiosmotic Coupling
For approximately twenty years, it has been generally agreed, in accordance with the chemiosmotic theory, that the coupling of electron transfer reactions to ATP synthesis is mediated by a proton electrochemical gradient, often alternatively called a protonmotive force, generated across these membranes by electron
Cellulose is an example of a polysaccharide.
Plants produce a polysaccharide known as cellulose. It makes up a part of the cell walls. This substance is a polymer made up of many glucose monomers connected by glycosidic connections. They consist of a linear chain of β 1,4-linked d-glucose units that have been polymerized to varying degrees (from a few hundred to over ten thousand).
Compared to starch or glycogen, cellulose has a distinct structure and consequently different properties because of how the glucose molecules are bonded together. On cellulose, the hydrolyzing enzymes for starch do not function.
The majority of species cannot digest cellulose. Therefore it bypasses them (roughage). Termites and goats have microbes that help them digest cellulose; they don't actually do it themselves.
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Levels of organization in ecology include the population, community, ecosystem, and biosphere. An ecosystem is all the living things in an area interacting with all of the abiotic parts of the environment.