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What else can I help you with?
How many recessive alleles are needed to be expressed?
Depends on the characteristic. Assuming you're talking about a very simple monogenic characteristic (ie. a characteristic which is dependent on one gene only) your dominant allele will always trump your recessive allele. So, one copy of your dominant allele is all that's needed to give you that characteristic (final genotype is either homozygous dominant or heterozygous), whereas you'd need two copies of your recessive allele (homozygous recessive) to get that characteristic. Much beyond that and it gets verycomplicated.
How can alleles be?
Alleles are alternative forms of a gene that may differ in their nucleotide sequence, leading to variations in traits. Genes come in pairs, with one allele inherited from each parent, contributing to an individual's genotype and phenotype. Alleles can be dominant or recessive, influencing the expression of traits in an organism.
Using the terms dominant recessive explain the difference between genotype and phenotype?
No, I think you have your terms confused.The terms "dominant" and "recessive" are applied to alleles of a genotype. A genotype is an expression (using upper- and lower-case letters) that shows what alleles an organism has for a particular locus. The two alleles (in most cases) inherited (one from mother and one from father) can either be dominant or recessive. The recessive allele is not fully expressed in the presence of the dominant allele and is only expressed when there are two recessive alleles. The genotype could be called "recessive" I suppose if the genotype is homozygous recessive. But remember that two recessive alleles as a genotype is only one possibility - in which case you can't say the "genotype is recessive".The phenotype is dependent on the genotype. If present, the dominant alleles (in simple Mendelian genetics) will determine the phenotype - what the organism's trait or characteristic is. The phenotype will never be what is coded by the recessive allele unless the genotype is two recessive alleles.
If an offspring receives a pair of trait-controllers containing both a dominant and a recessive trait what happens to the recessive trait?
The dominant trait is shown in that organism with the possibility of carrying either the dominant or recessive gene to the next generation
Is a disorder know as a dominant or recessive?
A disorder can be either dominant or recessive, depending on the specific genetic inheritance pattern. Dominant disorders only require one copy of the mutated gene to be expressed, while recessive disorders require two copies.
What are the causes of PXE?
PXE is caused by changes in the genetic material, called mutations, that are inherited in either a dominant or recessive mode.
What is the phenotype of a purebred recessive?
A recessive trait is known as the characteristic that is the outward expression of the gene. Recessive traits can be masked by dominant traits but are still present if the gene is present in the organism.
How many recessive alleles are needed to be expressed?
Depends on the characteristic. Assuming you're talking about a very simple monogenic characteristic (ie. a characteristic which is dependent on one gene only) your dominant allele will always trump your recessive allele. So, one copy of your dominant allele is all that's needed to give you that characteristic (final genotype is either homozygous dominant or heterozygous), whereas you'd need two copies of your recessive allele (homozygous recessive) to get that characteristic. Much beyond that and it gets verycomplicated.
An allele is either what or what?
Dominant or recessive
Is being hairy a dominant or recessive gene?
Hairiness is determined by multiple genes and can be influenced by a combination of both dominant and recessive genes. The presence or absence of body hair can be inherited in a complex manner, making it difficult to categorize as strictly dominant or recessive.
How can alleles be?
Alleles are alternative forms of a gene that may differ in their nucleotide sequence, leading to variations in traits. Genes come in pairs, with one allele inherited from each parent, contributing to an individual's genotype and phenotype. Alleles can be dominant or recessive, influencing the expression of traits in an organism.
Would a mutation be a dominate or a recessive trait?
A mutation can be either recessive or dominant depending on what trait it is.
Using the terms dominant recessive explain the difference between genotype and phenotype?
No, I think you have your terms confused.The terms "dominant" and "recessive" are applied to alleles of a genotype. A genotype is an expression (using upper- and lower-case letters) that shows what alleles an organism has for a particular locus. The two alleles (in most cases) inherited (one from mother and one from father) can either be dominant or recessive. The recessive allele is not fully expressed in the presence of the dominant allele and is only expressed when there are two recessive alleles. The genotype could be called "recessive" I suppose if the genotype is homozygous recessive. But remember that two recessive alleles as a genotype is only one possibility - in which case you can't say the "genotype is recessive".The phenotype is dependent on the genotype. If present, the dominant alleles (in simple Mendelian genetics) will determine the phenotype - what the organism's trait or characteristic is. The phenotype will never be what is coded by the recessive allele unless the genotype is two recessive alleles.
If an offspring receives a pair of trait-controllers containing both a dominant and a recessive trait what happens to the recessive trait?
The dominant trait is shown in that organism with the possibility of carrying either the dominant or recessive gene to the next generation
A living thing that shows a dominant trait may be homozygous dominant or homozygous recessive for the trait true or false?
False because a living thing that shows a dominant trait can not be homozygous recessive. If it is homozygous recessive it will show recessive trait. A living thing that shows dominant trait may be homozygous dominant or hetrozygous.
Is a disorder know as a dominant or recessive?
A disorder can be either dominant or recessive, depending on the specific genetic inheritance pattern. Dominant disorders only require one copy of the mutated gene to be expressed, while recessive disorders require two copies.
Are sex linked traits dominant or recessive?
They can be either or depending on the trait.
