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DNA has unique properties that allow it to accurately retain genetic information, even after multiple rounds of replication. One

Bingel [31]

Answer:

G= 22%

A=28%

T= 28%

Explanation:

Given that percentage of cytosine content (C) = 22%

Since C pairs with G, percentage of guanine content (G) would also be = 22%

Hence, G+C = 22+22 = 44%

This means that A+T = 100-44= 56%

Since adenine pairs with thymine so, percentage of A= percentage of T

Hence percentage of Adenine (A)= 56/2 = 28%

And percentage of Thymine (T) = 28%

8 0

3 years ago

If a DNA molecule is compared to a spiral staircase what parts makes up the steps

Burka [1]

pairs of nitrogen bases. I hope It will halp

8 0

3 years ago

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Mitosis is a type of cell division. organize the images below to show the steps of mitosis.

barxatty [35]

Answer:

The correct order is F, E, C, G, H, A, D, and B (look at the image in the attached files)

Explanation:

Interphase: Stages G1, S, and G2. At this point probably, the chromatin duplication has already occurred, but it is still lax or dispersed. It has not condensed yet. Two pairs of centrioles are outside the nucleus (FIGURE F)
Prophase: Centrioles move forward to the opposite poles of the cell. Chromatin is condensed and individual chromosomes are now visible. The nuclear membrane breaks into many pieces. Spindle apparatus -microtubules- forms. (FIGURE E)
Metaphase: The polar and the kinetochore fibers drive each individual chromosome to the equatorial plane. This stage ends when all the chromosomes are completely arranged in the medial area. (FIGURE C)
Anaphase: Sister chromatids separate and move to the opposite poles of the cells, driven by the microtubules. In each pole, there are a pair of centrioles (FIGURE G and H).
Telophase: The nuclear membrane rearranges. Each sister chromatid becomes now a new chromosome. There is a pair of centrioles outside each of the nuclei. (FIGURE A)
Cytokinesis occurs at the end of the cell division. The rest of the cell is divided into two new daughter cells. Each daughter cell is an identical copy of the other cell, with the exact same genetic material (FIGURE D).
Decondensation of the genetic material of each new cell (FIGURE B).

5 0

2 years ago

Primary growth or lengthening of plants results from mitotic division in cells of which tissue?

Lesechka [4]

Primary growth or lengthening of plants results from mitotic division in cells of the apical meristem tissue. The apical meristem can be found in the top of plants. When the plant divides, it helps to lengthen it. The correct choice is C.

6 0

3 years ago

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What are 3 ways that compounds and mixtures differ

professor190 [17]

Answer:

3 ways to understand the differences between compounds and mixtures are described below in explanation.

Explanation:

1. In a mixture, no new product is formed. It is a simple tacking of two molecules without any chemical reaction occurring. For example water and sand. Compound is a new substance formed by chemical reactions occurring between various molecules. For example, carbon and oxygen combine to form carbon dioxide.

2. A compound is always homogeneous whereas a mixture can be homogeneous or heterogeneous.

3. Compounds have a fixed boiling and melting temperature. Whereas, mixtures do not have a definite melting and boiling temperature.

5 0

3 years ago

Ecological ____