Tall pea plants are dominant over short pea plants. If there are 200 short plants in the F2 generation from a cross that followed Mendel’s methods, about how many plants will be tall in that generation?

The correct answer is 600 tall plants.

Explanation:

When there is crossing in two true-breeding plants produce hybrid offspring or heterozygous offspring with the character of dominant alleles and known as F1 generation.

Offspring in the F1 generation would have the genotype of Tt and would have the phenotype of being tall due to the dominancy of the tall allele. Cross in between two F1 offspring to produce F2 can be represented by the  punnet square:

      T        t

T    TT     Tt

t     Tt       tt

TT - tall

Tt - tall 

tt -  short

The punnet square shows that F2 generation have 3;1 phenotypic ratio in between tall and short plant. The 200 short plants in the questions would be 25% of 800 or 1:4. Take the 200 away from 800 and you get 600 that would be tall.

Thus, the correct answer is 600 tall plants.

european union policies. the eu's long-term objective is to achieve levels of air quality that do not result in unacceptable impacts on, and risks to, human health and the environment. eu policies aim to reduce exposure to air pollution by reducing emissions and setting limits and target values for air quality.

the main environmental problems in western europe were: energy production/acid rain, nuclear power/waste, air pollution/climate, heavy metals, pesticides, water pollution, solid waste, and unforeseen accidents. many environmental problems are common to most european countries.

•there must be variation for the particular trait within a population.

•the variation must be inheritable (that is, it must be capable of being passed on from the parents to their offspring).

•individuals with one version of the trait must produce more offspring than those with a different version of the trait.good

explanation: