# How many gametes does a Trihybrid cross?

Contents

The F1 hybrid produces 8 types of gametes. These on selfing have equal chances to combine with any of the 8 types of gametes produced by the other parent resulting in 64 different combinations.

## How many gametes are produced in f2 generation of a Trihybrid cross?

Thus, maximum 2x2x2 = 8 gametes are produced.

## How do you determine how many gametes are possible in a cross?

Simply place a 2 above each heterozygous gene pair and a one above each homozygous gene pair. Then multiply the numbers together to obtain the total number of different possible gametes.

## How many different types of genetically different gametes will be produced?

Hence, 1×2×2=4 types of gametes would be produced having the genotypes ABC, ABc, AbC and Abc.

Question How many types of genetically different gametes will be produced by a heterozygous plant having genotype AABbCc?
Type of Answer Video, Text & Image

## How many genotypes are possible?

A description of the pair of alleles in our DNA is called the genotype. Since there are three different alleles, there are a total of six different genotypes at the human ABO genetic locus. The different possible genotypes are AA, AO, BB, BO, AB, and OO. How are blood types related to the six genotypes?

## Why is test cross done?

A test cross is performed in order to determine the genotype of a dominant parent, i.e., whether it is a heterozygous or a homozygous dominant. On the basis of the results obtained, the ratios of the offsprings help us to predict that the parent has which type of genotype.

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