When you have a cold antibiotics wont do antibiotics are used to treat infections caused by bacteria antibiotics canNOT treat infections caused by viruses such as a cold even flu
Answer:
Site-directed mutagenesis
Explanation:
Site-directed mutagenesis (SDM) is a technique widely used in molecular biology in order to generate site-specific, targeted changes in the DNA sequence of a gene of interest. The SDM protocol consists of using a complementary oligonucleotide (primer) that contains the desired mutation, which hybridizes to the target DNA sequence and thus can trigger the desired mutation. Nowadays, the versatile CRISPR-Cas9 genome editing system is the most used technique to produce targeted mutations in any gene of interest.
Answer:
The phenotype ratio of HhGg x HHGg is 9:3:3:1.
Explanation:
The phenotypic ratio is concerned with the relative number of the offspring man manifesting a particular trait or combination of traits. It can be determined by making test cross and then finding the frequency of the traits.
phenotype ratio of HhGg HHGg is a different di-hybrid cross. One 'g' will be combined with the one 'h'. In result the huge will be dominant that of small and green will be dominant to that of blue.
HhGg × HhGg ( huge/green × huge/green)
From the below stated table we can conclude the ratio which is like huge/green =9,
Small/green = 3,
huge/blue=3,
small/blue = 1.
Hence it is proved that the phenotypic ratio will be 9:3:3:1.
Answer:
Cells from the pure culture can cause disease in healthy individual after infecting it with the pure culture.
Explanation:
Koch postulates says that microbes are the cause of every disease. These microbes can be isolated from the infected host and can be grown outside the host in a pure culture. Then this pure culture is able to cause disease in a healthy host after infecting the host with pure culture. Then this same microbe can again be isolated from the second host.
So Koch postulates which proves that cells from the pure culture can cause disease in healthy individuals after infecting it with the pure culture was the step that enabled Koch to determine that a particular microbe is the cause of the disease because it was causing disease in healthy individual also.