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1 year ago

Please Answer Quick!!! 2. How are the three mutated strands similar to each other?

Biology

2 answers:

mestny [16]1 year ago

6 0

Answer:

There are three types of DNA Mutations: base substitutions, deletions and insertions. Single base substitutions are called point mutations, recall the point mutation Glu -----> Val which causes sickle-cell disease. Point mutations are the most common type of mutation and there are two types.

Explanation:

insens350 [35]1 year ago

5 0

Answer:

they are both long

Explanation:

i had this question yesterday

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Charlie contracted Lyme disease when he was bitten by a tick, which is a small spider-like animal. The tick carries harmful bact

saw5 [17]

The tick carries harmful bacteria that was released into charlies blood

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2 years ago

The nurse finds the client who has had an ileostomy crying. the client explains to the nurse, "i am upset because i know i will

EleoNora [17]

Ileostomy is a procedure where the end of the small intestine, called the ileum, is brought out of an opening in the belly through surgery. The opening is called a stoma, and its shiny, bright red in color. It is often done after the large intestine has been removed due to cancer or serious physical injuries. Having a stoma, and the need of emptying it several times a day, is disfiguring so the patient often suffer from poor self image. The patient in the case, may be concerned of being unable to continue romantic relationships due to having a stoma. As a nurse, make sure to first make patient understand that ileostomy surgery does not involve the reproductive organs or the gonads. Then, acknowledge that while having a stoma is disfiguring, many organizations are helping increase awareness and acceptance of those who have the condition. Refer the patient to such local stoma advocacy organizations.

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2 years ago

Large proteins, like DNA polymerase and hemoglobin, are often composed of several polypeptides that are linked together. The ___

AnnZ [28]

Answer: Primary

Explanation: The primary level of protein structure explains the sequence of amino acid linked together by peptide bonds to form polypeptide chains . A slight change in the amino acid sequence of Hemoglobin can alter hemoglobin function.

The primary level of protein structure is essential in the function of the protein any alteration in the amino acid sequence can disrupt the function of the protein.

4 0

2 years ago

Name each numbered stage in the plant cell cycle diagram:

zheka24 [161]

Answer:

1. Metaphase

2. Prophase

3. Telophase

4. Interphase

5. Interphase

6. Interphase

7. Anaphase

8. Interphase

9. Telophase

10. Metaphase

11. Interphase

12. Interphase

13. Interphase

14. Interphase

15. Prophase

16. Interphase

17. Metaphase

18. Anaphase

19. Interphase

20. Interphase

21. Prophase

22. Interphase

Explanation:

The cell cycle is divided into two main divisions. The Interphase ad the M phase or the Mitotic phase.

Throughout Interphase, the cell is not dividing yet, but it is preparing to divide. It synthesizes the nutrients it will need, and grows in preparation to become two cells. This is actually the phase the cell spends the longest time.

Mitotic phase is when the cell starts to divide. It is separated into:

Prophase:

In this phase the chromosomes are condensed and mitotic spindles start to form. These spindles are made up of microtubules that will help later on to split the chromosomes. The nuclear membrane disappears so that the chromosomes will be free to move.

Metaphase

This phase is marked by the alignment of the chromosomes in the middle of the cell. They line up and you will find the asters at the opposite ends of the cell, where the microtubules stem from, attaching themselves to the center of the chromosomes, which we call the kinetochore.

Anaphase

In this phase you will see that the chromosomes are separated by the spindle fibers and are pulled at opposite ends of the cell. The cell then becomes longer by the other spindle fibers that are not attached to a chromosome.

Telophase

This phase is the end phase. The two sets of chromosomes are then enclosed by new nuclear membranes forming two nuclei and other cellular structures just as the cells are about to separate completely. As the two new cells move further apart, in plant cells a cell plate forms, dividing the two cells. The movement of the two cells splitting apart is called cytokinesis and it happens just as mitosis is about to end.

Attached is a picture of the cell cycle of a plant cell.

4 0

1 year ago

The mechanism that breaks the linkage between linked genes is

gregori [183]

Answer:

Crossing over

Explanation:

Crossing over is the process during which two chromatids of two homologous chromosomes exchange part of their genetic segments. It occurs during the pachytene stage of prophase I of meiosis I.

Linked genes are mostly inherited together and do not exhibit independent assortment. However, when linked genes are present far apart from each other on the same chromosome, crossing over can occur between them to produce recombinant chromatids. Therefore, crossing over can break the linkage and produce recombinant progeny as it occurs during the independent assortment of unlinked genes.

8 0

1 year ago