All categories

3 years ago

If a grandfather and grandchild are the only two with a genetic disorder, the disorder must be __________.

1 answer:

7 0

The disorder where the grandfather and the grandchild are affected is related with the X chromosome and is called Sex linked or X linked disorder.

<h3>Explanation:</h3>

All the sex linked disorders are recessive in character i.e the normal allele is dominant over the mutated allele. In females, there are 2 X chromosomes, so the mutated allele is only expressed when there are both the mutated alleles, else its masked by the dominant normal allele. But in males, there's only one X chromosome, so if a mutated allele is present, it's readily expressed.

If the Grandfather is diseased, then he must have that mutated allele in X chromosome. Through reproduction, its received by the mother, but she is normal because the other allele received from grandmother was normal. But mother has one of the X chromosomes with mutated allele, which is received by the grandson who again becomes diseased. So the disorder must be X linked disorder

You might be interested in

A synthetic 20 amino acid polypeptide named Betanova was designed as a small soluble molecule that would theoretically form stab

ra1l [238]

Answer:

The β-Turns in this sequence are two and include the Glycine (G), the two anterior amino acids, and the one posterior amino acid.

You will find the molecule image in the attached file.

Explanation:

β-Turns are structural elements that intervene in the orientation of the polypeptide backbone. These are short sequences of amino acids, with a characteristic conformation, that imposes a sharp 180º turn on the polypeptide chain. They are very abundant in globular proteins, such as Betanova, connecting the two adjacent antiparallel segments of the sheet.

They are mostly composed of four amino acids. In most cases, the third amino acid is usually Glycine, and in other cases, the second amino acid is Proline. In any case, the first residue of the sequence forms a hydrogen bridge with the last residue of the sequence, linking the amide-group of the last amino acid with the carbonyl-group of the first amino acid in the sequence.

According to the given sequence of the protein, we can find two specific regions in the molecule that contains glycine (G). Proline is not present in Betanova. Following the theory, in most turns, Gly seems to be the third amino acid of the short sequence. So, we can assume that the first two amino acids that are located before the G and the amino acid located after the G, are the ones that compose the β-Turns.

RGWSVQNGKYTNNGKTTEGR

The first turn (QNGK) turns the direction of the polypeptide 180º, going forward to the opposite side.
The second turn (NNGK) turns again the direction of the polypeptide, driving the last strain to the other side.

In the attached image, you will find the structure of Betanova showing strands (black arrows) and turns (red arrows).

4 0

3 years ago

Both the consumption of alcohol and the ingestion of antianxiety drugs work to increase the activity of __________, which is an

Allisa [31]

Ingestion of antianxiety drug and alcohol will likely result to an increase of GABA or also known as the gamma Aminobutyric acid. It is the one responsible of neuronal excitability reduction in the nervous system of an individual and it plays a neurotransmitter in the CNS.

6 0

3 years ago

If you had an unknown protein,what would indicate that it was a membrane protein?

Sloan [31]

Answer: A membrane protein is defined as a protein that has an attachment to or is associated with a cell membrane or a cell organelle.

If one has a protein,the following will indicate that the protein is a membrane protein.

- They compose of the same

20 amino acids as contained in soluble protein.

- Sometimes, membrane protein attach itself to lipid moieties in a covalent manner.

- Unless they are anchored,they always diffuse liberally in the membrane.

- They sometimes attached to carbohydrates moieties covalently.

3 0

3 years ago

If the root equi- means "equal," what does equinox mean?

Alona [7]

C) when the length of day and the length of night are the same

7 0

3 years ago

Use Chargaff’s rules to predict the missing values for E. coli, human, and ox DNA. Round your answers to the nearest whole numbe

Black_prince [1.1K]

Answer:E. coli: Cytosine- 26, Thymine-24

Human: Guanine-20, Cytosine-20

Ox: Guanine-21, Cytosine-21, Thymine-29

Explanation:

Chargaff's rules state that in a given DNA molecule the percentage of Adenine %A is approximately equals the percentage of Thymine %T and the percentage of Guanine %G is approximately equals the percentage of Cytosine %C.

Answer is

E. coli: Cytosine- 26, Thymine-24

Human: Guanine-20, Cytosine-20

Ox: Guanine-21, Cytosine-21, Thymine-29

7 0

3 years ago