Alleles that are dominant are expressed whether there are one or two copies of the allele. Recessive alleles are expressed only in the absence of a...Become a member and unlock all Study Answers Start today. Try it now Create an accoun...
Alleles interact with one another and this interaction determines the phenotype of an individual. Some relationships that can exist between alleles are as follows: Complete dominance: One allele is expressed and masks the effects of the non-dominant or recessive gene. ...
What are dominant alleles and recessive alleles? A dominant allele will lead to expression of the dominant trait in both homozygous dominant and heterozygous individuals. A recessive allele will only lead to expression of a recessive trait in homozygous recessive individuals.What...
Another allele relationship, incomplete or semi-dominance, is distinct from co-dominance. If purple and white flower colors are from semi-dominant alleles, a PW offspring would be colored light purple, a mix of the two traits. Co-dominance would have yielded spotted flowers instead. Epistasis is...
If a parent has a mutation in a dominant allele of a gene, there is a 50% chance that an offspring will also have the abnormal gene. As the mutation is located on one of the autosomes, the sex of the offspring will not affect the outcome of the disease or disorder. A common example...
Yes, this is because brown alleles aredominant alleles. Alleles can be dominant orrecessive. Sometimes, a child can have blue eyes even though their mum and dad have brown eyes. This can be possible if the child inherits both blue recessive alleles from parents, as in the genetic diagram be...
When a person has a heterozygous genotype, with one normal and one mutated copy of HEXA they do not have the Tay-Sachs phenotype, but are actually incompletely dominant at the protein level. These people have less HEXA than unaffected individuals, but the amount produced is enough to evade th...
Since any offspring they have gets one allele from each parent, all of their offspring would have coloration chromosomes made up of “Gg.” In this pairing, all of the offspring are green, since the dominant allele is present, though they still contain the recessive possibility for blue ...
Dominant It can mask the presence of another trait. The dominant gene for curly hair can overshadow the gene for straight hair. 2 Recessive A trait that expresses only when two alleles support it. Blue eyes manifest when both alleles are recessive for it. 4 Dominant Most influential or widesp...
Dominance is straightforward in its expression, relying on the interplay of just two alleles of a single gene. The dominant allele shows its trait, while the recessive allele's trait appears only when two copies are present. Conversely, epistasis adds a layer of complexity because it involves in...