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You need to inherit the same recessive allele from both parents. Which in turn means, that both parents need to have each have at least one copy of said recessive allele.

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9y ago

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What is the result of two recessive alleles joined?

When two recessive alleles are joined together in an individual, the individual will display the recessive trait associated with those alleles. This is because recessive alleles only express themselves when a dominant allele is not present.


How is recessive alleles different from dominant alleles?

You need two recessive alleles to get their trait, but only one dominant allele to get that trait. A dominant allele basically overrides a recessive one if they are together, but the recessive gene can show up in offspring.


Which alleles is the recessive alleles?

Recessive alleles are alleles that are masked or overshadowed by dominant alleles. In a heterozygous genotype, the recessive allele does not show its effects. Only in a homozygous recessive genotype does the recessive allele manifest its trait.


What are alleles and what are the two forms?

Alleles are different versions of a gene that can code for different traits. The two forms of alleles are dominant and recessive. Dominant alleles mask the effects of recessive alleles when present together in an individual's genotype.


What combinations of alleles could produce a trait controlled by a recessive alleles?

recessive + recessive or tt


How are recessive and genes related?

If you are talking about traits, dominant traits and recessive traits both have alleles. Dominant traits are alleles that cover up the expression of other alleles. One dominant allele with one recessive allele makes a dominant trait. Two dominant alleles together also make a dominant trate. Recessive traits are alleles that are only expressed when there is no dominant trait to cover them up. Two recessive alleles make a recessive trait. Traits can be passed over to the next generation. Two alleles together make a genotype, which is the inherited combination of alleles. Alleles: different versions of the same gene. Heredity: determined by genes. Genes: piece of DNA that shows the cell how to make a protein it needs.


How are dominant and recessive genes?

If you are talking about traits, dominant traits and recessive traits both have alleles. Dominant traits are alleles that cover up the expression of other alleles. One dominant allele with one recessive allele makes a dominant trait. Two dominant alleles together also make a dominant trate. Recessive traits are alleles that are only expressed when there is no dominant trait to cover them up. Two recessive alleles make a recessive trait. Traits can be passed over to the next generation. Two alleles together make a genotype, which is the inherited combination of alleles. Alleles: different versions of the same gene. Heredity: determined by genes. Genes: piece of DNA that shows the cell how to make a protein it needs.


How many recessive alleles are needed to show up in the phenotype?

Two (together).


What has the disadvantage of bringing two recessive alleles together and causing a genetic defect?

Inbreeding


What do dominant and recessive alleles have in common?

Alleles are different types of a gene. Each gene controls a characteristic and they is usually a recessive allele and a dominant one. The main similarity is that they both control a certain characteristic!


What type of alleles mask recessive alleles?

Dominant alleles :-)


What can be dominant or recessive?

Alleles can be dominant or recessive