Which of the following describes an allele whose characteristic phenotype is masked by the presence of a second, different allele?
dominant
recessive
polygenic
codominant

The correct answer is- Recessive.

Allele is described as an alternative form of a gene. There are two forms of a gene that is dominant allele ( represented by capital letter) and recessive allele ( represented by small letter).

Recessive allele does not exhibit its phenotype in presence of dominant allele. In other words, dominant allele masks the expression of recessive allele.

Example of recessive allele- 't' for dwarf height of pea plant. It is masked by dominant allele 'T' that represents tall plant height.

before, trains worked using the steam engine. thus, it uses heat so it is crucial to apply heat balance. the steam engine absorbs energy during the stage of boiling water. so, this is the endothermic reaction. when the steam is used to work the piston, it has to release this energy through running the train. the excess energy is released as an exhaust to the chimney. this is the exothermic process because it releases energy to the surroundings.

we need additional information in order to determine the cause of death for anna garcia. there are at least 3 things with explanation included as to why we need them are as follows: