# How many combinations of alleles can be made?

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## What are the different combinations of alleles?

If the two alleles are the same, they are described as homozygous. If the two alleles are different, they are described as heterozygous. If the makeup of an individual’s alleles for a trait, its genotype, is known, we can predict how likely it will be that those alleles will appear in its offspring.

## How many possible alleles are there for each gene?

An individual inherits two alleles for each gene, one from each parent. If the two alleles are the same, the individual is homozygous for that gene.

## How many different combinations of alleles are possible among the gametes?

Since each parent has four different combinations of alleles in the gametes, there are sixteen possible combinations for this cross.

## How many combinations of 4 alleles are there?

4 alleles there are 1 + 2 + 3 + 4 = 10 genotypes.

## What is a combination of alleles called?

Within an individual organism, the specific combination of alleles for a gene is known as the genotype of the organism, and (as mentioned above) the physical trait associated with that genotype is called the phenotype of the organism.

## How many possible combinations are there for 4 nucleotides?

The three-letter nature of codons means that the four nucleotides found in mRNA — A, U, G, and C — can produce a total of 64 different combinations. Of these 64 codons, 61 represent amino acids, and the remaining three represent stop signals, which trigger the end of protein synthesis.

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## How many combinations are possible with 4 DNA base pairs?

Let’s start with a gene that has 2 bases (no such gene exists). If we allow any base at each one of the 2 positions, then we have 4×4 (42) or 16 possible combinations of sequences. Similarly, for a sequence length of 4, the total # of combinations are 4x4x4x4 (44) or 256.