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3 years ago

Which of the following molecules are not required to express a gene in eukaryotic cells?

Biology

1 answer:

slava [35]3 years ago

4 0

Answer:

Repressor protein

Explanation:

Repressor is a protein that binds to deoxyribonucleic acid(DNA) or ribonucleic acid(RNA) it inhibits the expression of one or more genes which is done by binding to the associated silencers.

A DNA binding repressor works by blocking the attachment of RNA polymerase an enzyme that enhance transcription to the promoter, thus preventing genes from been transcribed into messenger RNA.

An RNA binding repressor binds to the messenger RNA and prevents translation of the bases on the messenger RNA into protein. The blocking of expression is called repression.

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What is another name for sex chromosomes

kati45 [8]

I believe the answer is X chromosome and Y chromosome.

8 0

3 years ago

In Drosophila, a developmental mutation called ssa (spineless aristapedia) results in flies with mini leg parts on the antennae.

34kurt

Given our understanding of genetics, we can confirm that the gene in question is of the homeotic type.

In biology, we refer to a gene as the most basic unit of genetic information.
It is a segment of DNA that encodes for a certain trait that <u>may or may not be expressed.</u>
A gene carries the information for a specific trait, for example:

1) Eye color

2) Body organization

3) Height

<h3 /><h3 /><h3>What does it mean for a gene to be homeotic?</h3>

In the case of this question, the gene in question is a homeotic gene.
Homeotic genes are those that are in charge of the organization of the organism's body.
These genes control the <u>general pattern of the body</u>, such as where the arms and legs will be, and so on.

Therefore, given the definition of a homeotic gene, we can confirm that this is the type that best fits the description of the mutation in the question since it affected the formation and normal organization of the body.

To learn more about homeotic genes visit:

brainly.com/question/7991651?referrer=searchResults

4 0

2 years ago

Which question is testable?

Nuetrik [128]

The correct answer is: A. How does changing the amount of water affect the growth of corn?

While options B, C & D are not impossible to test, option A is the only question that can be tested using quantitative methods, such as statistical analysis. The question in option A states: "How does changing the amount of water affect the growth of corn?". This question is easily testable using scientific investigation, because controlled or measured amounts of water can be added to corn, and the consequent growth rate of corn can be easily measured and recorded. However, the questions in options B, C & D cannot be precisely measured using quantitative tools, since they aim to measure qualitative (subjective) factors, such as: ethics, happiness and disappointment.

5 0

3 years ago

Read 2 more answers

The main events in meiosis During the first division, chromosomes pair and sections of are exchanged between non-sister chromati

andrew11 [14]

Answer:

Cytokinesis divides the two cells into four daughter cells.

Explanation:

Meiosis is a type of cell division in which a single cell is divided into four daughter cells. These daughter cells are haploid i. e. half number of chromosomes. This type of cell division occurs only in sex cells of male and female organisms. There are two phases of meiosis. In meiosis 1, a single cell is divided into two daughter cells while in meiosis 2, these two daughter cells again divided into four daughter cells.

8 0

3 years ago

The man whose brain injury sparked new interest in brain research was:

ANEK [815]

Hey, there!

The man whose brain injury sparked new interest in brain research was: Phineas Gage

Good luck on your assignment and enjoy your day!

~ $MeIsKaitlyn:)$

7 0

3 years ago