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sleet_krkn [62]
3 years ago
8

Hey can someone explain what happens in the "prophase" stage of cell division??

Biology
1 answer:
geniusboy [140]3 years ago
8 0
During mitosis, the chromatin in the nucleus of a cell condenses and becomes visible under a microscope. The membrane around the nucleus breaks down.
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What differs among DNA structures of different species?
weqwewe [10]

Answer:

D) the arrangement of the nucleotides within genes

Explanation:

De-oxy ribo nucleic acid that is basically a polymer of nucleotides. Nucleotides are composed of three basic units: a de-oxyribose sugar unit, a phosphate group and nitrogenous bases that can be Adenine, Gunanine, Thymine and Cytosine.Adenine always pairs with Thymine and Guanine always pairs with Cytosine.

This is a universal composition of DNA in each and every living organism. The genes are a segment of DNA that contain specific sequence of nucleotides and encode for a specific trait of organism such as height, weight, eye color etc. The sequence of nucleotides expresses the trait in the form of protein product during the process of Translation. The products of translation are amino acids and every amino acids encode for a specific protein  in almost  all living organisms.

So, what differs in the specie is the sequence of nucleotides in genes. Infact this is the nucleotide sequence which brings evolution in organism and organisms evolve to form new specie with the passage of time. One major cause of change in nucleotide sequence is mutations due to which the organisms change with time.

Suppose the sequence of nucleotide of specific gene in organism A is

AAGGGGAAATTT

However in other specie organism B of same specie is:

TAGGGGAAATTT

This means only mutation of one base changed the gene in organism B and also its product called protein.

Hope it help!

8 0
3 years ago
Read 2 more answers
In Klinefelter syndrome, individuals are phenotypically male, but they have reduced sperm production and may have some breast de
Alisiya [41]

Answer:

List of options to choose from to complete the question:

A. Aneuploidy

B. Polyploidy

C. Translocation

D. Monosomy

E. Duplication

The CORRECT ANSWER IS A.

A. Aneuploidy.

Explanation:

Aneuploidy results from unusual number of chromosomes in a cell, e.g a human cell with 45 or 47 chromosomes other than 46.

It's mostly seen in Trisomy e.g. trisomy 21 (Down syndrome), trisomy 13 (Patau syndrome) and trisomy 18 (Edwards syndrome).

5 0
3 years ago
1)The job a cell does or performs is called its?
allochka39001 [22]
Function

structure


I hope that [email protected]
6 0
2 years ago
The reaction-center chlorophyll of photosystem I is known as P700 because
jonny [76]

Answer:

The correct answer will be option-B.

Explanation:

Photosystem of a plant is complex pigment-protein molecules which absorbs the light energy required for the formation of a glucose molecule.

Two types of Photosystem are present in the plants which are: P₆₈₀ and P₇₀₀. The 680 and 700 denote the wavelength of the light energy absorbed by the pigment of the chloroplast. The electrons get excited only at their absorbing wavelength.

Thus, Option-B is the correct answer.

3 0
3 years ago
Nitrogen-fixing bacteria in the roots of soybeans help provide a source of nitrogen to the plants, and in exchange, the bacteria
Valentin [98]

Answer:

symbiotic relationship

Explanation:

A symbiotic relationship is a relationship in which the members of the relationship get benefits from each other....... In roots of leguminuous plants , the bacterias are the only source for nitrogen by plants & in turn plants provide food to bacterias

3 0
3 years ago
Read 2 more answers
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