In the plant Arabidopsis thaliana, the hormone florigen is released once the number of hours of daylight reaches 12 hours per day in the spring. Florigen binds to functional protein product of gene A (encoded by the completely dominant allele A1, allele A2 produces a non-functional protein) which allows the binding of this protein to a region upstream of gene B, stimulating its transcription. Gene B can stimulate the transcription of Gene C by binding to part of its promoter region, but only if the concentration of Mg2+ is above 0.1 pM. Expression of functional proteins of Gene C results in the production of flowers. Allele C1 encodes a functional protein while C2 encodes a non-functional protein, and C1 shows complete dominance. Describe whether flowers would be produced in each of the following instances, and explain why or why not. (2 each)
a. Daylight >12 hours, Mg2+ = 0.2 pM, plant genotype is A2A2 : BB : C1C1
b. Daylight >12 hours, Mg2+ = 0.15 pM, plant genotype is A1A1 : BB : C1C2
c. Daylight >12 hours, Mg2+ = 0.05 pM, plant genotype is A1A2 : BB : C1C1

explanation:

idk

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.

oxygen is the first element in group 16 (via) of the periodic table. the periodic table is a chart that shows how chemical elements are related to each other. the elements in group 16 are said to belong to the chalcogen family. other elements in this group include  sulfur, selenium, tellurium,  and  polonium.  the name chalcogen comes from the greek word  chalkos,  meaning "ore." the first two members of the family, oxygen and sulfur, are found in most ores.

oxygen is by far the most abundant element in the earth's crust. nearly half of all the atoms in the earth are oxygen atoms. oxygen also makes up about one-fifth of the earth's atmosphere. nearly 90 percent of the weight of the oceans is due to oxygen. in addition, oxygen is thought to be the third most abundant element in the universe and in the solar system.

yes

explanation

they do and it slaps