What is the purpose of a punnett square? a) finding the genotype ratio for a cross. b) predicting the outcome of a coin toss. c) finding what genes a parent has. d) pretending the number of children someone will have.

A) Finding the genotype ratio for a cross.

Explanation:

It was named after a geneticist called Reginald Punnet was discovered its use.

A punnet square is a form of drawing with square boxes can help to determine the how possible it is for a child to have particular characteristics, traits or disorders from their parents.

When the genotypes of parents are given , a punnet square can help to determine the various possibilities of different types of genotypes that a children can have from their parents.

Punnet squares are very essential tools that can be used by plant geneticist to create unique plants or crops with desirables qualities during plant breeding.

step 1: nitrogen fixation- conversion of atmospheric no₂ into forms useful to plants by lightning, bacteria, and cyanobacteria.

step 2: nitrification-process of converting ammonia to nitrite or nitrate.

step 3: assimilation-plant roots absorb new form of nitrogen.

step 4: ammonification-conversion of organic nitrogen to ammonia by bacteria involved in decomposition.

step 5: denitrification-bacteria turns the decomposed matter back into n₂o, which is released into atmosphere; repeat cycle.

answers are:

lysogenic     viral dna merges with host cell dna

lysogenic     no symptoms

lytic               viral dna takes over

lysogenic     virus does not destroy host cell

lytic               virus destroys host cell

lytic               induces symptoms of viral infection

lysogenic       cell reproduces and spreads provirus