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erica [24]
2 years ago
8

DNA is made of nucleotides (one nucleotide is labeled X in the picture

Biology
1 answer:
DENIUS [597]2 years ago
7 0

Answer:

a nitrogen-containing region known as a nitrogenous base, a carbon-based sugar molecule called deoxyribose, and a phosphorus-containing region known as a phosphate group attached to the sugar molecule

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Forensic scientists are trying to find an exact dna match to a sample left at the scene of a crime. the sample from the crime sc
aleksley [76]

The answer is ‘suspect iii has 900 bp and 260 bp sized DNA fragments’

Forensic science utilizes particular sequences of DNA that are unique to people and are cut differently by restriction enzymes. These  techniques are referred to as Restriction Fragment Length Polymorphism (RFLP) and the Short Tandem Repeat (STR) Analysis. In this case, there is an exact match on the crime sample and that of the suspect.






5 0
3 years ago
Read 2 more answers
Place the events in the correct order:
Alecsey [184]

Answer:

1. Chromatin condense into chromosomes.

4. Homologous chromosomes pair up (formation of tetrads).

5. Homologous chromosomes separate and move to poles.

2. Sister chromatids separate.

3. Chromosomes unravel in to chromatin.

Explanation:

This question portrays the process of meiosis in a cell. The ordered sequence of events in the options are:

1. Chromatin condense into chromosomes - This process occurs in the Prophase stage. Prior to the cell division, the nuclear material is found as Chromatin material. This Chromatin material then undergoes condensation to form visible chromosomes.

4. Homologous chromosomes pair up (formation of tetrads) - This process also occurs during the Prophase stage of meiosis I. In this stage, homologous chromosomes (similar but non-identical chromosomes received from each parent) are paired up side by side to form a structure known as TETRAD or BIVALENT.

5. Homologous chromosomes separate and move to poles - This process characterizes the Anaphase stage of meiosis I. Homologous chromosomes are pulled apart to opposite poles of the cell by spindle microtubules.

2. Sister chromatids separate - After meiosis I, meiosis II involving sister chromatids instead of homologous chromosomes follows. In the Anaphase stage of meiosis II specifically, sister chromatids are pulled apart towards opposite poles of the cell.

3. Chromosomes unravel in to chromatin - After the whole division process i.e. karyokinesis (division of the nuclear material), the chromosomes begin to unravel to form the CHROMATIN threads once again. This process occurs in the Telophase stage of meiosis.

5 0
2 years ago
A diverse group of mostly single celled organisms are called
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Explanation:

the answer is not A, B,D now get it it is Clear C protists

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3 years ago
Students placed their eggs in vinegar, a mild acid. The egg shells disappeared overnight. Based on the passages description of w
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It is A: a chemical reaction, due to the acid activity (acetic acid)
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3 years ago
How does cell wall help make a protein?
777dan777 [17]

Answer:

The cell wall sends signals for the cell to enter the cell cycle in order to divine and grow

Explanation:

The cell wall is porous allowing some substances, including proteins, to pass into the cell while keeping other substances out

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3 years ago
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