Answer: ionic, covalent, and metallic
Explanation:
There are three major types of chemical bonds: ionic, covalent, and metallic. Ionic bonds form due to the transfer of an electron from one atom to another. Covalent bonds involve the sharing of electrons between two atoms.
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1) Data:
dominant allele- A
recessive allele- a
Heterozygotic: Aa (only carries the allele)
Homozygotic recessive: aa (expresses the disease)
Homozygotic dominant: AA (doesn't carry or expresses the disease)
2)The first cross between Jim and his first wife originated a offspring with
<span>cystic fibrosis</span>. That offspring has the genotype aa and for that to happen both parents need to be a least carriers or express the disease. The exercise rules out the second case, which makes Jim a carrier.
3)Now between Jim and Martha:
From the previous step, we already found that jim is a carrier and the exercise also tells us that Martha is one too. So, their genotype is: Aa.
The cross: Aa x Aa
The probability:
1/4 aa = 25%
2/4 =Aa
1/4 - AA
the probability of having a <span>baby with cystic fibrosis is 25%</span>
The correct term to fill in the blank would be peripheral. The two major divisions of the nervous system are the central and the peripheral nervous systems. The central nervous system consists of the spinal cord and the brain. The peripheral nervous system is made up of nerves and small amount of gray matter known as the ganglia. The nervous system is a very important part of the body as it is responsible of connecting all of the organs and the parts to the brain. It is responsible for carrying messages to the brain and out from the brain to the other parts of the body.
<span>Harvey has had en episode of Gate-control theory. The gate control theory of pain asserts that non-painful input closes the "gates" to painful input, which prevents pain sensation from traveling to the central nervous system. Therefore in Harvey's case, his presentation was so stimulating to him that the experience and moment of it suppressed his pain momentarily.</span>