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What must the genotype of an X-linked recessive trait be for a woman to express it?
If the woman does not show the trait, she must have a dominant allele (version of the gene); let's call it A. She also carries the recessive gene, a. So her genotype is Aa. This means that half her ova (gametes) will contain the dominant A, half a.
The rest is up to the sperms; half of them will carry an X chromosome, with either A or a on it (unless there are more than two alleles involved).
What else can I help you with?
A scientist notices that a person has two recessive genes for a trait This describes the person's?
genotype for that trait.
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 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 contains a dominant trait and a recessive trait?
Genotype
What is the differences between homozygous dominant and homozygous recessive and heterozygous?
Homozygous dominant individuals have two copies of the dominant allele for a trait, homozygous recessive individuals have two copies of the recessive allele, and heterozygous individuals have one copy of each allele. Homozygous dominant and heterozygous individuals will express the dominant trait, while homozygous recessive individuals will express the recessive trait.
A scientist notices that a person has two recessive genes for a trait This describes the person's?
genotype for that trait.
What following genotypes will express a dominant trait?
For a dominant trait to be expressed, you either need a RR or an Rr genotype. The other genotype, rr, is recessive only. In genetics, capital letters represent a dominant allele, and lower case letters represent the recessive allele.
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.
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 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.
In a hybrid individual the trait that is covered and not expressed is the what trait?
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 Bb recessive?
No only bb is recessive, Bb is heterozygous meaning the subject is a carrier of the recessive trait but exhibits the traits of a dominant carries (BB) good luck on the bio
What combination of alleles could produce a trait controlled by a dominant allele?
genotype
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.
