Determine whether the statements below are true or false. If a statement is false, provide the correct information or revise the statement to make it correct.

The progeny of a trihybrid cross are expected to have one of 27 different genotypes.

Key Concepts

Trihybrid Cross

A trihybrid cross involves the genetic crossing of organisms that are heterozygous for three different traits. Each trait is determined by a pair of alleles, leading to a combination of alleles in the offspring. The expected phenotypic ratio for a trihybrid cross, based on Mendelian genetics, is 27:9:9:9:3:3:1, indicating the variety of traits expressed.

Genotype

Genotype refers to the genetic constitution of an organism, specifically the alleles it possesses for a given trait. In a trihybrid cross, each trait can have two alleles, leading to a combination of alleles that results in different genotypes. The total number of unique genotypes can be calculated using the formula 2^n, where n is the number of traits being considered.

Mendelian Inheritance

Mendelian inheritance is the set of principles that describe how traits are passed from parents to offspring through alleles. Gregor Mendel's laws of segregation and independent assortment explain how alleles segregate during gamete formation and how different traits are inherited independently. Understanding these principles is crucial for predicting the outcomes of genetic crosses, such as the number of possible genotypes.