Answer:
Human blood type exhibits codominance as well as normal Mendelian inheritance (known as dominant/recessive)
Explanation:
Neither the A gene nor the B gene is dominant to the other. They both share in the phenotype AB blood type. Think of co-captains of a team sharing responsibilities.
A and B are both dominant to O which is recessive. If a person inherits A & O they have blood type A. Likewise, if a person inherits B & O they have blood type B. Only if they inherit O & O (homozygous recessive) will they have type O blood.
Answer:
D.) repressor DNA-binding site mutation
Explanation:
lacl prevents the repressor polypeptide is a mutant that prevent operon from binding lactose, and thus will bind to the operator and be non-inducible.. This mutant will represses the lac operon whether lactose is present or not and the lac operon will not be expressed. It is also called“super-supperesor".
The lacI locus – One type of mutant allele of lacI (callled I-) prevents the production of a repressor polypeptide or produces a polypeptide that will not allow to bind to the operator sequence.
This is also a constitutive expresser of the lac operon because absence of repressor binding permits transcription.
Answer:
Humans move from one country into another country.
Explanation:
It kills of the virus while strengthening the immune system
