C :D :D :D :D :D :D :D :D :D :D :D :D :D :D :D D:D
Answer:
One allele is on one chromosome, and the other is in the same position (locus) on the homologous chromosome.
Explanation:
The genotype of an organism refers to the genetic makeup or complete set of genes. The genes control the trait of an organism and exist in an organism in their alternative form called alleles.
Since the alleles are the alternative form of a gene, therefore, they must be present at the same position called a locus.
These alleles are present on the homologous chromosome in which each homologous chromosome is contributed by each parent.
Therefore when the genotype is aa then a and a allele will be present on homologous chromosomes in the same position.
Thus, the selected option is correct.
Answer:
The fact is Most bacteria produce a cell wall that is composed partly of a macromolecule called peptidoglycan. Human cells do not make or need peptidoglycan. This peptidoglycan is the target for Penicillin. It prevents the final cross-linking step, or transpeptidation, in assembly of this macromolecule. The result is a very fragile cell wall that bursts, killing the bacterium. No harm comes to the human host because penicillin does not inhibit any biochemical process that goes on within us as we don't possess peptidoglycan.
Answer:
a, b, d are correct about citric acid cycle
Explanation:
a. The major reactants in the citric acid cycle are acetyl CoA, NAD + , GDP , and FAD . acetyl CoA from glycolysis cycle, and other reactants are NAD, GDP and FAD reacts to form NADH, FADH2 and GTP.
b)The citric acid cycle occurs in the matrix of mitochondria of the cell.
c) The citric acid cycle is an aerobic process.