All categories

3 years ago

Which would be affected first by a change in a DNA nucleotide sequence?

Biology

1 answer:

lys-0071 [83]3 years ago

7 0

Answer:

A mutation is a change that occurs in our DNA sequence, either due to mistakes when the DNA is copied or as the result of environmental factors such as UV light and cigarette smoke.

DNA is a dynamic and adaptable molecule. As such, the nucleotide sequences found within it are subject to change as the result of a phenomenon called mutation. Depending on how a particular mutation modifies an organism's genetic makeup, it can prove harmless, helpful, or even hurtful.

I hope it helps.

Have a great day.

You might be interested in

Someone please go to my account and answer my most recent questions !! id greatly appreciate it!

nikklg [1K]

Ok I will!!!!!.......

3 0

4 years ago

Read 2 more answers

Pls help me with all these questions pls i will heart u and give u brainliest

Lady_Fox [76]

Answer: right bottom is kidney

Left bottom is liver

Q. 4 part a, The excretory system.

B, kidney: The kidneys make urine by filtering wastes and extra water from blood. Urine travels from the kidneys through two thin tubes called ureters and fills the bladder.

And Q. 5 order, 3, 2, 1, 4.

Explanation:

6 0

3 years ago

Read 2 more answers

22. A plant geneticist is investigating the inheritance of genes for bitter taste (Su) and explosive rind (e) in watermelon (Cit

mylen [45]

Answer:

See the answer below

Explanation:

Using the formula for calculating Chi square ( $X^2$ ):

$X^2$ = $\frac{(O - E)^2}{E}$ where O = observed frequency and E = expected frequency.

The observed frequencies for the four phenotypes are 88, 62, 62, and 81 respectively.

For the expected frequency, the phenotypes are supposed to assort in 9:3:3:1 according to Mendel ratio.

Hence, expected frequencies are calculated as:

phenotype (1) = 9/16 x 293 = 164.81

phenotype (2) = 3/16 x 293 = 54.94

phenotype (3) = 3/16 x 293 = 54.94

phenotype (4) = 1/16 x 293 = 18.31

The $X^2$ is calculated thus:

Phenotype O E $X^2$

1 88 164.81 $\frac{(88 - 164.81)^2}{164.81}$ = 35.80

2 62 54.94 $\frac{(62 - 54.94)^2}{54.94}$ = 0.91

3 62 54.94 $\frac{(62 - 54.94)^2}{54.94}$ = 0.91

4 81 18.31 $\frac{(81 - 18.31)^2}{18.31}$ = 214.64

Total $X^2$ = 35.80 + 0.91 + 0.91 + 214.64 = 252.26

To the nearest tenth = 252

Degree of freedom = n - 1 = 4- 1 = 3

$X^2$ tabulated = 7.815

<em>The calculated </em> $X^2$ <em> exceeds the critical value, hence, the null hypothesis is rejected. The two genes did not assort independently. </em>

4 0

3 years ago

When electrons are shared, the type of bonding is called _____.

schepotkina [342]

Answer:

Covalent

Explanation:

A covalent bond, also called a molecular bond, is a chemical bond that involves the sharing of electron pairs between atoms.

5 0

4 years ago

Rapid consumption of multiple drinks or jello shots puts a high concentration of alcohol in the body in a short time. why is thi

kupik [55]

Rapid consumption of alcohol in a very short period of time is very dangerous; due to delayed absorption the drinker will not know how really drunk he is and intoxication from that kind of drinking can last for days and even weeks.
Besides, such drinking pattern may make the whole body system to collapse causing death. Such drinking may also lead to alcohol induced psychiatric disorder.

7 0

3 years ago