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german
3 years ago
11

A DNA sequence that is responsible for the initiation of transcription in a cell-type specific manner is:_____.

Biology
1 answer:
EleoNora [17]3 years ago
6 0

Answer:

Promoter.

Explanation:

It is promoter because Promoter is a DNA sequence where's the gene transcription begins. It is the

DNA sequence which RNA polymerase binds or join to

so as to begin transcriptionn of a gene . It is a region where the regulatory elements i.e protein will bind to and the Promoter sequences are found directly upstream or at the end of 5' of the transcription initiation site. This can also encode RNA such as mRNA, trans and so on.

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The use of wich material can substitute for copper and reduce copper mine production
JulijaS [17]

Answer:

There are two answers to this question. Gold or Aluminum.

6 0
2 years ago
Una mujer lleva en uno de sus cromosomas X un gen letal recesivo (l), y en el otro alelo dominante normal (L). ¿Cuál es la propo
nlexa [21]

Question in English:

A female carries a recessive lethal gene (l) on one of her X chromosomes, and a normal dominant allele (L) on the other. What is the sex ratio to be expected in this woman's dependency if she marries a normal man?

Answer:

2/3 females

1/3 males

Explanation:

Females have two X chromosomes (XX) and males have an X and a Y chromosome (XY).

The genotype of the female is XLXl. The genotype of the male is XLY, since he is normal.

The possible genotypes are:

<u>                            XL                  Xl</u>

<u>XL</u>                     <em>XLXL             XLXl</em>

<u>Y</u>                       <em>XLY               </em><em>XlY</em>

<em />

All female offspring will be normal as they will always have one normal copy of the X chromosome from their father.

50% of the male offspring will be normal, but 50% will inherit the lethal gene from their mother.

Because the allele is lethal, that means XlY males will not be born.

That means 2/3 of the children will be females, and 1/3 will be males.

8 0
3 years ago
What substance can be formed through the ionic bonding of an anion and a cation
PtichkaEL [24]
A salt can be formed

7 0
2 years ago
Read 2 more answers
Consider this situation: you want to reabsorb sodium ions but you do not want to increase the volume of the blood by reabsorbing
choli [55]

Answer:

Increase aldosterone and decrease ADH

Explanation:

Aldosterone causes reabsorption of sodium ions while Antidiuretic hormone (ADH) causes reabsorption of water. Aldosterone also causes water reabsorption due to increased osmotic pressure by reabsorbing sodium ions. But for water reabsorption, Aldosterone has to work along with ADH to increase permeability for water. If we increase Aldosterone and decrease ADH, the sodium ions will be reabsorbed while water cannot be reabsorbed due to decreased permeability of DCT and collecting tubules for water.

7 0
3 years ago
What provides instructions to a eukaryotic cell about living and growing?
Aneli [31]
The correct answer is DNA
4 0
3 years ago
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