Question

Trihybrid ratio is
A. 27:9:9:9:3:3:3:1
B. 27:9:9:6:6:3:3:1
C. 1:6:15:20:15:6:1
D. 36:6:6:6:3:3:3:1

Answer 1

Hint: These are used to assess the phenotype and genotype probability. It can be studied using a forked line method. It is a match between two heterozygous organisms.

Complete answer:
The genetic study of these traits was first given by Mendel in his experiments on peas. The study was controversial. It was known as the Mendel's law of inheritance. He explained the genotype and phenotype. He explained the importance of traits and chromosomes. To study further multiple traits were compared. The crosses are used to understand the basic genetic phenotypes and genotypes. It can be monohybrid. Dihybrid, Trihybrid and so on.
When one trait is considered it is monohybrid, when two are considered it is known as dihybrid and in three it is known as Trihybrid.
 Trihybrid cross is when three traits are considered and matched between two organisms. The organisms are heterozygous for each trait.

When this is crossed, out of two each parent has the capability to produce 8 different types of gametes which can produce up to 64 combinations.
So this crossing can be observed with a forked line method.
This helps to deal with the phenotype or genotype possibility. The correct answer is A i.e 27:9:9:9:3:3:3:1.

Note:
The crosses are used to understand the basic genetic phenotypes and genotypes. It can be monohybrid. Dihybrid, Trihybrid and so on.
When one trait is considered it is monohybrid, when two are considered it is known as dihybrid and in three it is known as Trihybrid.