A situation in which one allele is changed to the allele found on the homologous chromosome is called Blank______. Multiple choice question. non-homologous recombination sister chromatid exchange gene conversion crossing over
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DNA repair during meiosis, where one allele is switched for another allele already in the genotype ________?A group of alleles of genes that display a hierarchy of dominance relationships among them is called _____?A specific consensus sequence of eukaryotic mRNA that contains the authentic start codon is called____?
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Homologous recombination occurs in a heterozygote in which alleles D and d differ by a single base pair. The D allele has a G (a GC base pair) at one position, whereas the d allele has a C (a CG base pair) at the same position. If branch migration causes heteroduplex formation across this position, what is the expected outcome? Both D and d alleles will remain unchanged because G can base pair with C. Mismatch repair will identify abnormal G-G and C-C base pairs and may convert the D allele to a d allele or the d allele to a D allele. Mismatches will cause the Holliday junction to be unstable and to resolve by the noncrossover pathway. Mismatch repair will identify abnormal G-G and C-C base pairs and gene conversion will always occur in situations like this one when mismatched bases exist within the heteroduplex region. Mismatch repair will identify an abnormal C-G base pair and will ensure that the cell has two copies of each allele.
Adi S.
Genetic exchange between 2 homologous chromosomes is called ____
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