I think you’ll be able to be able to breathe better
There are 4 nitrogenous bases in DNA. Adenine pairs with thymine, and Guanine pairs with cytosine. A Dna Nucleotide consists of a 5 carbon sugar, a phosphate group and a nitrogenous base. These bases are paired up by weak hydrogen bonds, so when they have have to replicate, the enzyme helicase can easily unzip the Dna. <span />
Individual with genotype AaBBCC has the dark skin colour.
Explanation:
The skin colour is a polygenetic trait i.e two or more genes control the particular characteristic in an individual.
The amount of gene in the individual in such cases would determine the skin tone.
It is given that dominant alleles are responsible for darkest colour of the skin in the example. We could see that the genotype AaBBCC has maximum dominant alleles which makes us to deduce that individual with this genotype will have dark skin phenotype.
This quantitative occurrence of alleles in the individual decides its skin colour and variations in it.
The genes are independent of each other but have an additive effect on the phenotype like skin colour.
Answer:
b) the human form of hexokinase.
Explanation:
According to the given information, the amino acid sequences of bacterial and human hexokinase enzyme are different. When a human hexokinase gene sequence is introduced into a mutant bacteria that lack its own hexokinase gene sequence, the resulting bacteria will produce the human form of hexokinase. This is due to the fact that the introduced sequence was from the human hexokinase gene.
Promoters serve as binding sites for RNA polymerase to facilitate gene transcription. Therefore, the presence of a normal bacteria promoter would allow the transcription of the human hexokinase gene in the mutant bacteria.
Answer:
trophic level is the answer