2n (2n 1. Let's imagine what would happen to the amount of DNA material in a cell if, when it reproduced, it did not duplicate the DNA first. Complete this cell box. Problem n 2n 2n) 2n 2n (2n 2. Explain what this mistake creates in the new cells.
Molecular Techniques
Molecular techniques are methods employed in molecular biology, genetics, biochemistry, and biophysics to manipulate and analyze nucleic acids (deoxyribonucleic acid (DNA) and ribonucleic acid (RNA)), protein, and lipids. Techniques in molecular biology are employed to investigate the molecular basis for biological activity. These techniques are used to analyze cellular properties, structures, and chemical reactions, with a focus on how certain molecules regulate cellular reactions and growth.
DNA Fingerprinting and Gel Electrophoresis
The genetic makeup of living organisms is shown by a technique known as DNA fingerprinting. The difference is the satellite region of DNA is shown by this process. Alex Jeffreys has invented the process of DNA fingerprinting in 1985. Any biological samples such as blood, hair, saliva, semen can be used for DNA fingerprinting. DNA fingerprinting is also known as DNA profiling or molecular fingerprinting.
Molecular Markers
A known DNA sequence or gene sequence is present on a chromosome, and it is associated with a specific trait or character. It is mainly used as a genetic marker of the molecular marker. The first genetic map was done in a fruit fly, using genes as the first marker. In two categories, molecular markers are classified, classical marker and a DNA marker. A molecular marker is also known as a genetic marker.
DNA Sequencing
The most important feature of DNA (deoxyribonucleic acid) molecules are nucleotide sequences and the identification of genes and their activities. This the reason why scientists have been working to determine the sequences of pieces of DNA covered under the genomic field. The primary objective of the Human Genome Project was to determine the nucleotide sequence of the entire human nuclear genome. DNA sequencing selectively eliminates the introns leading to only exome sequencing that allows proteins coding.
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Sameness and Variety (Mitosis and Meiosis)
165
EXERCISE #3
"Asexual Reproduction of Cells-Mitosis"
Asexual reproduction of cells is called mitosis. Immediately before
this cell division process begins, the DNA of a cell (either haploid or
diploid) duplicates itself creating two identical copies of every DNA
molecule (and chromosome). The DNA copies move to opposite ends of the
cell. Then the cell partitions itself into two cells (each with exactly the
same DNA as the original cell). The purpose of asexual reproduction by
mitosis is to create new cells that are genetically identical to the original
cell.
Mitosis produces
more of the same.
Haploid mitosis does happen in some organisms,
but will be covered in a more advanced biology course.
Diploid Mitosis
(2n
(2n
2n
(2n
2n
1. Let's imagine what would happen to the amount of DNA material in
a cell if, when it reproduced, it did not duplicate the DNA first.
Complete this cell box.
Problem
2n 2n)
2n
V2n (V2n)
2. Explain what this mistake creates in the new cells.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd786984f-f26e-4dbc-b656-e9e8131fb40b%2Fd1206ae4-de71-4c30-ad9f-2be70ac0bd0b%2F9b6zgvr_processed.jpeg&w=3840&q=75)
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