The correct sentences to correctly characterize marine reptiles are:
C. Since they drink seawater, they have large kidneys to filter excess salt.
D. Their skin prevents salt from entering their bodies.
F. They can control their buoyancy using their lungs.
<h3>What are reptiles?</h3>
Reptile is a class of animals that has animals like crocodiles, snakes, lizards, etc. These are cold-blooded animals. They are found in both land and water.
They are marine reptiles so, their kidneys and skin are adapted to filter salt, and save them from excess salt. Buoyancy is used when the animal or human dives into the water. These reptiles have lungs to do buoyancy.
Thus, options C, D, and F are correct regarding the characters of reptiles.
Learn more about reptiles, here:
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According to the National Heart, Lung, and Blood Institute, adults need around seven to eight hours. For teenagers they recommend nine to ten, and at least ten for children.
Answer:
given, mother and father are heterozygotes.
let, father has B blood group and mother has A blood group.
then their heterozygous genotypes are --
father = iB, iO and mother = iA, iO
punnett square will be,
iB iO
iA iA iB iA iO
iO iB iO iO iO
the genotypes of their progeny will be, iAiB , iAiO ,iBiO and iOiO
and phenotypes will be 3 are heterozygous and 1 is homozygous.
Answer:
The correct answer is option b. "20 H1, 40 H2A".
Explanation:
Chromatin is a complex that protects and condenses the genetic material comprised of DNA and proteins. When chromatin is in the form of a 30 nm fibril, nucleosomes have a regular positioning along the DNA. This means that each nucleosome is associated with a single H1 molecule. Therefore a chromatin containing 20 nucleosomes will have 20 copies of H1 and 40 copies of H2A, because each nucleosome has 2 copies of the core histone H2A.
It’s a bc they both need a wavelength
