Answer:
The answer is that NE injection has inhibitory effects on the paraventricular nucleus VPN.
Explanation:
It can be said that the destruction of the paraventricular nucleus (PVN) would produce a hyperphagia, on the other hand, the injection of norepinephrine (NE) would increase the feeding in the rats. This is because NE injection has inhibitory effects on the paraventricular nucleus. If neuronal activation in the paraventricular nucleus is increased, food intake by rats would be decreased.
<span>It
is truth that most of the unicellular organisms like bacteria, are
among the simplest life forms we know about it, but there are many
other unicellular organisms, like amoebas, warnowiids and algae, that
are far more complex. They can even have thousand of nuclei and be
visible with the naked eye. Some amoeba actively hunt their pray, and
some warnowiids even evolved and structure that functions like an eye;
so even though unicellular, they are not simple organisms at all.</span>
Answer:
recombination frequency = 4.5% or 4.5mu
Explanation:
to calculate the frequency of recombination between these genes
we have,
recombination frequency = [ number of recombinnants/total number of offsprings) x 100
total offspring = 88 + 103 + 6 + 3
total offspring = 200
Gl ra 88............................ parent
gl Ra 103.........................parent
Gl Ra 6..................................... recombinant
gl ra 3................................................ recombinant
recombination frequency = {6+3/88 + 103 + 6 + 3} x 100
recombination frequency = 9/200 x1oo
recombination frequency = 0.045 x 100
recombination frequency = 4.5% or 4.5mu
The correct answer is body type, cell type, cell structure, nutrition. Organisms are classified into six Kingdoms of life: Archaebacteria, Eubacteria, Protista, Fungi, Plantae, and Animalia. Organisms are placed into these categories based on similar or common characteristics.
Answer:
B
Explanation:
Directional selection tends to evolve towards one specific trait. In this example, white rabbits no longer have a competitive advantage because of disappearing snow. This means they are more easily spotted by predators, resulting in reduced fitness and less chance they will live to reproductive age and pass their recessive white alleles on.
Natural selection will favor the gray colour allele, increasing the frequency oft this previously rare allele.
