Answer:
The genes that the child inherited from the parents is the SS gene
Explanation:
The genetic composition of the haemoglobin genotype is given by two gene variants; A which is dominant and S which is recessive. As such, an individual can be AA, AS or SS. Individuals that are AA and AS do not show traits of the disease, but SS individuals have sickle cell anaemia.
From this example, since both parents have no symptoms and their child have sickle cell, their genotypes most likely were AS and AS. Let me show you how:
A S
A AA AS
S AS SS
From the cross above, there is a 1 in 4 chance that if both parents were AS, their child will be SS. Any other composition from the parents will not produce an SS offspring. Hence the genes that the child inherited from the parents is the SS gene.
Answer: Gram staining is arranged in the following order;
1) Crystal violet
2) iodine
3) Alcohol-acetone
4) safranin
Explanation:
Applying primary stain to a heat fixed smear of a bacterial culture
Then you add iodine which binds the crystal violet and traps it in the cell. After you decolourise with ethanol finally counter shade with safranin
<span>The Benedictâs test is used for studying the reducing sugars.
When the aldehyde is oxidized, the copper gets reduced and precipitates, changing the blue color of the solution to orange or red color.
The darker the color indicates that the solution has higher levels of sugar or a high amount of chemicals that have been reduced in the Benedictâs test.</span>
Heart rate is controlled by the two branches of the autonomic (involuntary) nervous system. The sympathetic nervous system (SNS) and the parasympathetic nervous system (PNS). The sympathetic nervous system (SNS) releases the hormones (catecholamines - epinephrine and norepinephrine) to accelerate the heart rate. The parasympathetic nervous system (PNS) releases the hormone acetylcholine to slow the heart rate. Such factors as stress, caffeine, and excitement may temporarily accelerate your heart rate, while meditating or taking slow, deep breaths may help to slow your heart rate.
Answer:
The correct option is A) the hypothalamus
Explanation:
The hypothalamus is a part of the diencephalon located below the thalamus and formed by several nuclei of neurons with their associated nerve fibers, many of them neurosecretory nature, that is, to the hypothalamus, afferent and efferent pathways arrive and depart respectively, which connect it with different regions of the brain and outside it, receives signals from internal sensory receptors and, in response, sends orders through pathways in which very few synapses intervene to quickly generate regulatory responses, for this reason, the hypothalamus is considered the center of neuroendocrine, autonomous and homeostatic regulation, which acts as an integrating center coordinating environmental messages, rhythms, endogenous development patterns, emotions and body signals, to finally produce, in an integrated way, early autonomous responses and relatively late endocrine responses.
