Like mom or dad? Some cells randomly express one parent's version of a gene over other
Both parents contribute one copy, or allele, of each gene to their offspring, so that we have two copies of every gene for a given trait -- one from mom, the other from dad ... expressed genes in the differentiated cells. "As differentiation occurs ...
C2005/F2401 '10 Lecture #22
What will the offspring (F 1 ... also allows repair -- if a and b are defective alleles, crossing over allows you to get a chromosome with both A and B from Ab plus aB. Note: In eukaryotes, crossing over occurs only at prophase I of meiosis.
Peril posed by gene mutations often depends on degree to which allele expressed, study finds
Mutations in some key areas can lead to the development ... These two versions of the same gene (individually called alleles) are not always expressed in the same way (a phenomenon called allele-specific expression). In particular, structural changes ...
Naked Mole rats are inbred
When close relations are mated the effect is often to bring together the same deleterious alleles, and when both are defective copies no “masking” can occur via ... of recessively expressed alleles results in their purging from the gene pool.
Mutated tumor alleles are expressed according to their DNA frequency
Our findings provide the first systematic genome-wide study of DNA and RNA mutation allele frequency in tumor samples and therewith demonstrate that mutations are both ... expressed genes are transcribed. Thus, the likelihood that a mutation in a ...