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mylen [45]
2 years ago
10

What happens to the expression of the laci gene if lactose is not available in the cell?.

Biology
1 answer:
Sav [38]2 years ago
4 0

Answer:

There is no change

is the awnser for this

Explanation:

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Why would rabbits in an enclosed field eventually reach a stable number? Birth rates would decrease.
Rudiy27
Disease and food shortages would keep the numbers down because of the increase in life.<span />
4 0
3 years ago
Why is the Sun considered “the boss” of the water cycle?
Alex

Answer:

The sun is the start of the water cycle

Explanation:

Water can not evaporate without the sun.

6 0
3 years ago
Hemoglobin is a complex protein that contains four polypeptide chains. The normal hemoglobin found in adults, called adult hemog
Evgesh-ka [11]

Answer:

1) A, C and D

2) D

Explanation:

The normal hemoglobin is made up of heme and globin. The protein, globin is in turn made up of four polypeptide chains which include two alpha and two beta chains.

The gene gene responsible for the creation of the beta globin chain is located on the short arm of chromosome eleven. It is called the HBB gene. Many mutations occur on the HBB gene and a mutation on this gene produces abnormal hemoglobin like HBS, hbc, and hbe. HBs causes sickle cell anemia.

In sickle cell anemia, there is an alteration of the genetic code, leading to the substitution of a single amino acid where glutamic acid is replaced by valine in the sixth position of the beta chain.

In the mRNA, the change converts a glutamic acid codon(GAG or GAA) to a valine codon(GUA, GUC, GUU or GUG).

Sickle cell anemia is caused by a transversion that leads to a missense mutation.

3 0
3 years ago
What type of data is identifying where the barnacle is found on the boat? (Quantitative or qualitative). Why?
attashe74 [19]

Answer:

qualitative

Explanation:

<u>Identifying where the barnacle is found of the boat will result in qualitative data, rather than quantitative.</u>

Qualitative data has to do with attributes that cannot be measured but can only be observed, approximated, and characterized, Examples include presence/absence, beautiful/ugly, black/white, etc. On the other hand, quantitative data has to do with attributes that can be measured, such as height, number of leaves, etc.

<em>Identifying where the barnacle is found on the boat has nothing to do with measurement. It only has to do with recording the presence or absence of barnacle in various locations on the boat. Hence, it is qualitative data.</em>

6 0
3 years ago
Which of the following is not associated with osmosis?
Goryan [66]
Answer: Active transport
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3 years ago
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