Answer:
The correct answer is - in the sickle-cell hemoglobin is the replacement of glutamic acid with valine in the β-globin amino acid chain.
Explanation:
Sickle cell anemia has a mutant gene in which that produces has valine amino acid instead of glutamate in the hemoglobin protein. In the given question the structure of the protein has only one difference that is the replacement of the glutamic acid in normal hemoglobin to valine in the β-globin amino acid chain in the mutant protein.
Valine 6 (beta chain) binds to a different hydrophobic patch (on the alpha chain and causes the disease in sickle cell anemia cases.
Hi the T and B cells change after contact with the pathogen is a-- acquired-- immune response.
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A substance that can donate a H+ ion is called an acid
Within the context of neutralisation the H+ ion is the substance that accepts an OH- ion to form water, so by extension it kind of implies the substance is an acid
A substance that has a low pH value is also an acid
Therefore the base is the substance that is alkaline
A behavior must affect an organisms fitness and have a genetic basis.
Explanation:
<u>d. The high cost of GM seeds may force small farmers out of business.</u>
Modified crops have been patented and marketed by private companies. The seeds produced have been sold to many small farmers with the promise of improved yields and hardy crop. However, the high cost of repurchasing seeds may often be prohibitive to small farmers hoping to keep their businesses afloat.
Further Explanation:
Genetically modified species (GMs) have their DNA altered or improved through genetic engineering methods usually GMOs include modifications in DNA through the incorporation of genes from all creatures such as plants, fungi, viruses and animals. These are referred to as transgenic organisms, which lead to several developments by increasing global food security which is the supply of food for the entire population.
GM crops are believed to be more robust in nutritional value and taste, immune to adverse weather conditions such as droughts. These can be resistant to pests, and should reduce the use of herbicides and pesticides
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