When a single copy of a disease allele doesn't result in a disease but instead is good for the person or organism that carries it, we say that allele has a heterozygote advantage. In other words this occurs when heterozyhotes have increased fitness over both homozygotes. A good example is sickcle cell trait, which protects against malaria in heterozygotes, but causes a deadly disease in homozygotes.
It is found that more than beta dicarbonyl compounds have more than 75 % concentration in Enol form and remaining in Keto form.
Reason: This excess of Enol form can be explained due to extra stability of this isomer. It is found that the enol form is being stabilized by the interamolecular interactions i.e. Hydrogen bonding between the hydroxyl group (acting as Hydrogen Bond Donor) and Carbonyl Oxygen (Hydrogen Bond Acceptor).
<span>The metabolic rate of the ectothermic organism would increase, and the metabolic rate of the endothermic organism would decrease.</span>
Answer: Chromosomes are made up of tightly wound Chromatin.
Explanation: Chromatin is wrapped around proteins called histones to make DNA and then DNA is tightly wound up and that is how you make chromosomes.
Answer:
a. Tetrapods are no longer tied to the water for reproduction.
Explanation:
Amniota Egg.
It is an egg that is isolated and protected from the environment during the period of its development by a series of extraembryonic membranes and, often, a more or less impermeable shell; Amniotic eggs of birds and many reptiles are completely autonomous and only require oxygen from the outside
.
The appearance of the amniota egg in a group of tetrapods made possible the most complete conquest of terrestrial habitats. This group of tetrapods called amniots is currently represented by reptiles, birds and mammals; Its origin dates back to the Carboniferous.
The Amniota egg, in it, the embryo generates three envelopes, Corion, Alantoides and Amnios, which make up an aqueous medium that allowed it to breathe and feed during its development. They also have a calcareous envelope that prevents desiccation, without preventing the exchange of gases and then allowing their development in a terrestrial environment.
