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The reason many harmful alleles are recessive is because the harmful alleles that were dominant stopped the carrier from reproducing so the allele was not carried on. A dominant trait is expressed if present and would harm the carrier. A recessive trait however can remain in the genotype of an individual and not the phenotype so they will not be harmed by the trait but can pass it on to offspring.
In short: dominant harmful alleles stopped the carriers from producing so the allele was not spread.
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∙ 13y ago
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Which alleles is the recessive alleles?
recessive alleles are the ones with small letters, for example in Rr, the recessive is the r.
How are dominant and recessive alleles are represented in a punnet square?
Dominant alleles are shown by a capital letter and recessive alleles are lowercase letters.
What type of alleles mask recessive alleles?
Dominant alleles :-)
A recessive allele is represented by an letter?
Most of the time a recessive allele is expressed using lower case letters in comparision to the upper case dominant alleles.
Albinism is a recessive trait in humans that is controlled by a single gene how many recessive alleles must a person have to have albinism?
2
Which alleles is the recessive alleles?
recessive alleles are the ones with small letters, for example in Rr, the recessive is the r.
What combinations of alleles could produce a trait controlled by a recessive alleles?
recessive + recessive or tt
Why some chromosomes are recessive and the others are domainent?
Actually a chromosome consists of many genes/alleles and is neither recessive or dominant in and of itself.
How are dominant and recessive alleles are represented in a punnet square?
Dominant alleles are shown by a capital letter and recessive alleles are lowercase letters.
What type of alleles mask recessive alleles?
Dominant alleles :-)
What can be dominant or recessive?
Alleles can be dominant or recessive
How many alleles are usually in the gene pool for each trait?
Each gene has a dominate and recessive allele, so there are two types of alleles in each gene. The dominate allele is stronger than the recessive allele unless there are two recessive alleles.
Most copies of harmful recessive alleles are carried by?
individuals that are heterozygous for alleles
How many recessive alleles must a person have to have albinism?
2
How are Dominant and recessive alleles are represented in Punnet Square?
Dominant alleles are shown by a capital letter and recessive alleles are lowercase letters.
What is the result of two recessive alleles joined?
Two recessive alleles (homozygous) will result in the recessive trait being expressed as a phenotype.
What is gene pair consists of two dominant alleles or two recessive alleles?
A gene pair that consists of 2 dominant or 2 recessive alleles is considered homozygous dominant or homozygous recessive.
