Two plants are crossed, resulting in offspring with a 3: 1 ratio for a particular trait. this ratio suggests that

This questiin lacks options, the options are:

A) that the parents were true-breeding for contrasting traits.B) incomplete dominance.C) that a blending of traits has occurred.D) that the parents were both heterozygous.E) that each offspring has the same alleles

The answer is A

Explanation:

This question illustrates the F2 generation of most F1 offsprings who obtained a 3:1 phenotypic ratio. The 3:1 means three of the dominant and one of the recessive trait. The dominant trait can either be homozygous or heterozygous while the recessive trait will only be expressed in a homozygous state.

Hence, based on Mendel's observation, Mendel performed a cross that resulted into 3:1 when he crossed two heterozygous offsprings i.e. combination of both of ALLELES. In a nutshell, this 3:1 ratio suggest that the parents are both heterozygous.

only about ten percent of the energy at one trophic level is passed on to organisms at the next trophic level. the remainder of the energy is used in life processes or lost as heat.