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If someone expresses a recessive trait, they must have a homozygous recessive genotype, which is represented as "aa" for a trait controlled by a single gene with two alleles (A and a). This means they possess two copies of the recessive allele. In contrast, individuals with at least one dominant allele (AA or Aa) will express the dominant trait.
What else can I help you with?
Is it true that if a person has a recessive trait the genotype must be homozygous recessive for the trait?
Yes, if a person expresses a recessive trait, their genotype must be homozygous recessive for that trait. This means that they have two copies of the recessive allele, one from each parent. If they were heterozygous they would not display the trait.
What is crossing recessive with dominant?
Crossing a recessive trait with a dominant trait involves breeding an organism that expresses the dominant phenotype with one that expresses the recessive phenotype. In genetics, the dominant trait will typically mask the expression of the recessive trait in the offspring. This can help determine the genotype of the dominant organism; if any offspring exhibit the recessive trait, the dominant parent must carry a recessive allele. This type of cross is often used in Mendelian genetics to study inheritance patterns.
A scientist notices that a person has two recessive genes for a trait This describes the person's?
genotype for that trait.
What is the genotype any time a recessive trait shows up?
The genotype for a recessive trait to show up is typically homozygous recessive (aa), meaning both alleles are the same and both are recessive.
What genotype must the person have who possessed the recessive phenotypes?
The genotype is homozygous recessive or the recessive trait is on the X chromosome and has no corresponding allele on the Y chromosome.
Is it true that if a person has a recessive trait the genotype must be homozygous recessive for the trait?
Yes, if a person expresses a recessive trait, their genotype must be homozygous recessive for that trait. This means that they have two copies of the recessive allele, one from each parent. If they were heterozygous they would not display the trait.
What contains a dominant trait and a recessive trait?
Genotype
How can you tell if someone is a carrier?
If their genotype contains both a dominant and a recessive allele for a trait.
A scientist notices that a person has two recessive genes for a trait This describes the person's?
genotype for that trait.
Which one is recessive Rr or RR?
The recessive trait is represented by the genotype rr, where both alleles are lowercase. The genotype RR represents the dominant trait.
What is the genotype any time a recessive trait shows up?
The genotype for a recessive trait to show up is typically homozygous recessive (aa), meaning both alleles are the same and both are recessive.
What genotype must the person have who possessed the recessive phenotypes?
The genotype is homozygous recessive or the recessive trait is on the X chromosome and has no corresponding allele on the Y chromosome.
What is the genotype of a person who is a carrier of a autosomal recessive trait?
The genotype of a person who is a carrier of an autosomal recessive trait is typically heterozygous, meaning they carry one copy of the recessive allele and one copy of the dominant allele for that trait. This would be represented as Aa, with the lowercase "a" representing the recessive allele.
What makes a dominant alleles different from a recessive alleles?
A dominant alle masks the expression of the recessive trait in a heterozygous genotype, a recessive allele is the phenotpye expressed is the recessive trait.
What makes a dominant allele different from recessive Allie?
A dominant alle masks the expression of the recessive trait in a heterozygous genotype, a recessive allele is the phenotpye expressed is the recessive trait.
What makes a dominant allel different from?
A dominant alle masks the expression of the recessive trait in a heterozygous genotype, a recessive allele is the phenotpye expressed is the recessive trait.
A homozygous genotype where both alleles are recessive are called?
A homozygous genotype with both alleles being recessive is called a homozygous recessive genotype. This means that both copies of the gene are the same recessive allele, resulting in the expression of the recessive trait.
