Which of the following statements is true?

A Tt plant and a TT plant have the same genotype.
A TT plant and a Tt plant are both tall.
A Tt plant and a tt plant have the same phenotype.
A tt plant is called a hybrid because it has two recessive genes.

A TT plant and a Tt plant are both tall.

Explanation: If T represents the allele for tall height and t represents the allele for short height, then TT and Tt are both tall.

Normally, every observable trait in living organisms are controlled by at least a pair of gene (allele). The alleles can either be dominant or recessive. A dominant allele has the ability to manifest the observable trait associated with it either in a homozygous or heterozygous state, that is whether the gene contains two identical dominant allele or one dominant allele and one recessive allele. Therefore, T will express itself as tall height whether present as TT or Tt.

ecotourism pay for conservation efforts.

1. loamy sand is about 80% sand with 10% clay and defined mostly by sand particles with some clay to provide structure and fertility. the sand particles are easily visible and the soil holds structure but breaks apart easily.

2. scott sand can improve his soil quality by incorporating more silt and organic matter into the soil. peat moss and organic matter can also be incorporated.