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Y_Kistochka [10]
3 years ago
14

Cynthia's family has a history of early onset Alzheimer's which has affected her Great-aunt and maternal grandmother. Although C

ynthia has shown no signs of cognitive decline, she decided to participate in a study to examine ongoing cognitive health and determine possible factors correlated to various forms of dementia. What is the best reason for participation in this study?
A) Cynthia wants to identify any change in her cognitive abilities as early as possible.
B) Participation in this study will give her greater access to drugs that would cure dementia.
C) Cynthia wants to track all the various medical conditions that are being measured in the study.
D) Participation in the study will contribute to a better understanding of factors that may contribute to dementia.
Biology
1 answer:
MA_775_DIABLO [31]3 years ago
4 0

Answer:

The correct answer is D participation in the study will contribute to a better understanding of factors that may contribute to dementia.

Explanation:

Alzheimer"s disease is one the of principle neurodegenerative disorder caused by the mutation of tau protein and also occurs due to the accumulation of mis folded proteins or prions proteins.

     The one of the most common form of dementia is alzheimer"s disease which severely affect the brain basically the thinking power of brain.

    As cynthia"s family has a history of early onset Alzheimer"s disease which has affected some of her family members.That"s why cynthia wants to participate in this study to point out the factors which are responsible for the occurrence of this disease in her family.

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Part A: A scientist examines a fruit fly gene involved with the regulation of body development. A section of the DNA sequence fo
Leokris [45]

Answer:

Part A: Thr-Leu-Val

Part B: ACC-UUG-GUU

Explanation:

When you transcribe a DNA sequence to mRNA, you need to remember that in RNA there is no Thymine (T), instead it has Uracil (U). So the base pairings would be like this compared to DNA base pairing:

DNA                RNA

A-T                  A-U

T-A                  T-A

C-G                 G-C

G-C                 C-G

Given the sequence the transcription will be as follows:

DNA :   TGG - AAC - CAA  

mRNA: ACC - UUG - GUU

Next, to translate it into amino acids, you will use the chart. Now amino acids pair in codons (3 base pairs at a time).  Let's take the first codon in your sequence:

ACC

1st  2nd   3rd

 A     C       C

Using the column on the left, find the row that matches it, so in this case A.

At the very top, there is another row of letters, looking at the row of A only, look for the column of the second base which is C.

Lastly, look at the right most column and find the letter that matches the third base within the box where A and C intersect. In this case, C is your third base.

The amino acid where all three intersect is your first amino acid which is Thr.

Just do this for the next codons and you will come up with the answer.

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