The sickle form of the hemoglobin gene is created when an adenine nucleotide is changed to a thymine. ... That single amino acid replacement in the -globin protein alters the shape and the chemistry of the hemoglobin molecule, causing it to polymerize and distort the red blood cell into the sickle shape.
Answer:
Professional gardeners often soak seeds in hydrogen peroxide before planting them in order to increase the germination percentage or to reduce germination failure. When the seeds are soaked in hydrogen peroxide, the seed coat becomes soft and enzymes present in the seed becomes active. Due to soaking of seeds, the seed takes less time to germinate. So that's why gardeners uses this method.
Answer:
Explanation:
Exons can be shuffled independently known as exon shuffling. It can be done in various ways, leading to infinite number of combinations to discover new and meaningful coding sequences hence various proteins. Due to exon shuffling, evolution need not occur only by the slow accumulation of point mutations but might also move ahead by “quantum leaps” with new proteins appearing in a single generation.
the same goes for the other
The ddNTP lacks the oxygen atom at 3' carbon in addition to at the 2'carbon which is lacking in the dNTP.
<h3>What is Sanger sequencing? </h3>
It is a chain termination method developed by Frederick Sanger and colleagues in 1977.
The process to determine the sequence of nucleotide bases in a part of a DNA molecule is called DNA sequencing. In the process of Sanger sequencing, the DNA molecule to be sequenced is copied multiple times by using polymerase chain reaction (PCR).
This creates DNA fragments of different lengths. Fluorescent labelled dideoxynucleotides are then used to terminate further chain formation.
This process marks the end of fragments and allows sequence determination. Therefore, a ddNTP is used in the Sanger Sequencing process. Compared to the normal DNA precursors, ddNTP lacks oxygen at the 3' carbon.
Read more about Sanger sequencing, here
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