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Do some traits require more than one gene to be fully expressed?
Wiki User
∙ 11y ago
Yes.
There are some traits like skin color that are controlled by multiple genes within an individual.
There is also a problem called nondisjunction that causes a gamete to wind up with two chromosomes instead of one. The offspring then has three chromosomes and three genes for each trait carried on that chromosome.
(Nondisjunction of the 21st chromosome causes Down syndrome, so someone with Down Syndrome has three genes for each trait on the 21st chromosome.)
Wiki User
∙ 12y ago
Wiki User
∙ 11y agoYes, such as your height or eye color.
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What is the difference between single-gene traits and complex traits?
Single gene diseases only effect one typeof gene where im a complex genetic disease many genes are effected. An example of a single gene diseas is sickle cell anemia. Cancer would be an eexample of a complex gene disease.
What is dominant and recessive?
These are terms used in a punnet square. Dominant is the Phenotype, or a gene that is predicted to be expressed in a heterozygous being- the offspring of two beings with different traits. Recessive is the Genotype, or a gene that is predicted to be hidden in the Deoxyribose Nucleic Acid, (DNA,) of a heterozygous being. Sometimes there is Codominance, where both genes are fully expressed, or incomplete dominance, where the genes are mixed, and are partially expressed.
When the alleles of a gene pair are expressed differently but neither is dominant to the other?
Codominance means that neither allele can mask the expression of the other allele. An example in humans would be the ABO blood group, where alleles A and alleles B are both expressed.
What are characteristics passed from parent to offspring called?
genetic traits
When would a mutation in DNA not cause a change in how the gene is expressed or in which proteins are made?
If a point mutation occurs in a location that is not critical to the structure and function of the protein, it will not change the way the gene is expressed. Also, since most amino acids have more than one codon, if the point mutation resulted in a codon for the same amino acid without the mutation, it will not change the way the gene is expressed.
Traits on a gene are expressed by?
C. Alleles
Do all versions of each gene always get expressed in an organism?
No, only dominant traits will be expressed.
What genes are recessive traits?
These traits are called dominant traits. They will overcome the recessive gene and the dominant trait will be expressed. A recessive gene needs two alleles present in its genotype to be expressed.
Traits that are typically expressed even if an offspring inherits just one copy of a gene for the trait are called?
Dominant Traits
Traits that are typically expressed even if an offspring inherits just one copy of a gene for the trait are called what traits?
Dominant trait due to doominant gene (as against recessive trait)
The gene that is fully expressed when two different alleles are present is the?
Dominant alleles :) hope i helped
What gene is always expressed?
Dominant genes will always be expressed however recessive genes would need to be inherited from both parents
What are the traits that are typically expressed even if an offspring inherits just one copy of a gene for the trait called?
dominant
What is the difference between a gene allele Chromosome and trait?
Alleles are alternate versions of genes that code for certain phenotypes, or traits. The traits of an individual are a result of the interaction between their genotype (alleles) and the environment.
An expressed gene is one that what?
a gene being expressed means it is shown, for example if you have the gene for brown eyes and the gene for blue eyes, only one can be expressed. if you have brown eyes that gene is expressed, if not the blue-eye gene is expressed.
Is an expressed gene turned off?
No. If a gene is expressed, it is turned on.
What type of alleles are expressed only if two identical copies on the homologs of the offspring?
A recessive gene A recessive gene makes it harder for genes(or traits) to be passed on from parents to daughters.
