Answer:
AA, Aa and aa genotypes will be produced.
Explanation:
If two birds with AA and aa genotypes are crossed, 4 offspring with Aa phenotype may be produced in F1 generation.
P generation: AA x aa
/ \ / \
F1 generation: Aa Aa Aa Aa
When these F1 generation birds will be allowed to breed, the genotype of the F2 offspring will be as under:
Aa x Aa
/ \ / \
F2 generation: AA Aa Aa aa
3 types of genotypes AA, Aa and aa will be produced in F2 generation. Their ratio will be AA : Aa : aa = 1 : 2 : 1.
1.)<span>a. antibodies
2.)</span><span>b. its mechanism is well understood</span>
Answer:e
retroviruses
Explanation:
Retroviruses appear to cause cancer in their host by mutating the host gene sequences allowing for the activation of some potentially oncogenic genes to be expressed. They do this by inserting their proviral DNA into the host genome at specific regulatory sequences deregulating cellular signaling and transcriptional controls.
Answer: The answer is inferior ovary
Explanation:
Whenever the other components of a flower such as petals and seals are placed in a position ABOVE the ovary i.e ovary is buried in the receptacle of the flower; such is called an INFERIOR OVARY
