Provide an example. What is a recessive allele? What is the difference between genes and alleles in biology? How does a dominant gene and a recessive gene differ from each other? What type of allele is always expressed regardless of whethe...
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...
What is autosomal gene expression? What is an example of an autosomal recessive trait? Can a trait be sex-linked and autosomal? What is heterozygous in autosomal dominant traits? What is autosomal chromosome abnormality? What does autosomal dominant genetic disorder mean?
What is an example of the law of segregation? In plants, for example, the color trait of theflowerwill depend on the type of allele inherited by the offspring. Each parent plant transfers one of the alleles to their offspring. And these sets of alleles in the offspring will depend on the...
A recessive trait is one that is only expressed when an organism has two recessive alleles for that trait. They are less common than dominant traits in most populations because dominant traits will appear in those with both homozygous dominant and heterozygous alleles. What are examples of recessiv...
There are five basic modes of inheritance for single-gene diseases:autosomal dominant, autosomal recessive, X-linked dominant, X-linked recessive, and mitochondrial. Is PP genotype or phenotype? There are three available genotypes, PP (homozygous dominant), Pp (heterozygous), and pp (homozygous rec...
An organism'sphenotypecan be seen in the physical expression of thegenotype. The child with genes for brown eyes and blue eyes can be described as a heterozygous offspring with brown-eyed, blue-eyed genotype and brown-eyed phenotype.
Step 2: Provide an Example of Co-dominanceAn example of co-dominance can be seen in the coat color of cows. In this case, one allele (A) represents black color, and the other allele (B) represents white color. When these alleles are combined in a heterozygous genotype (AB), the resul...
Loss of heterozygosity (LOH) is a common genetic event in many cancer types, so-called because of the early observations of a change in polymorphic markers from a heterozygous state in the germline to an apparently homozygous state in the tumour DNA [2]. LOH is a general term that encompass...
What is the probability that the first offspring from the cross listed below will be heterozygous for all loci? AA Bb Dd Ee x aa Bb Dd EE Assume alleles A and B are completely dominant to alleles a and b. If an indi...