Answer:
The answer to number 7 is A. Hibernation
The best answer i believe is b. Sequencing
The answer is true, Sponges can regenerate the entire organism from just a conglomeration of their cells. They can be cut up or mashed, and as long as they have two special cells called collencytes, which produce the gelatinous matrix in the sponge, and archeocytes, which produce all the other cells in the spongeâ??s body, the sponge will reform into the sponge it once was. Although, it will look different. Hope it helps!
Answer:
Troponin and calcium ions.
Explanation:
Troponin is a component of thin filament along with tropomyosin and actin. It is a protein complex to which calcium binds and start the production of muscular force.
Calcium also playing a very important role in muscle contractions, it binds with troponin and helping to move tropomyosin.
When calcium ion attached to troponin, then conformational changes occurs in troponin shape and moves which allow tropomyosin going away from its inhibitory position from the myosin-binding sites on actin. After this, the energized myosin head starts binding to the actin molecules and starts the cross bridge cycle, which helping in shortening the muscle's fiber.
Answer:
The male's genotype is MmRrBb.
Explanation:
The dominant allele R causes solid tail color, and the recessive allele r results in white spots on a colored background.
The black coat color allele B is dominant to the brown allele b
But these genes can only be expressed if the animal has an mm genotype at a third gene locus. Animals that are M_ are yellow regardless of which allele from the B locus is present.
A mating between a solid yellow-tailed male yawn cat and a solid brown-tailed female yawncat
the offspring:
6 M_R_ solid yellow
2 M_rr spotted yellow
3 mmR_B_ solid black
1 mmrrB_ spotted black
3mmR_bb solid brown
1mmrrbb
Since the female's genotype is mmR_bb. To produce offspring with these varying genotypes; each parent contributes one copy each. Since the male is a solid yellow, we can say part of his genotype is: M_R_.
Among the offspring, there is the presence of the dominant B allele, thus we can assume his genotype to be: M_R_B_.
Among the offspring, we have those that express the black and brown colour and to get the brown colour (b), the two parents must possess a copy each of both the m that allows expression and b that allows for brown colour. Thus the male genotype is: MmR_Bb.
There are also spotted ones among that can express this trait when both parent possess one copy each of r allele. Thus the male's genotype is MmRrBb.
Thus the mating will be between MmRrBb and mmR_bb to produce those stes of progeny.