Question

Considering your knowledge of the general principles of genetic inheritance, your understanding of human microsatellite profiles and the valuable information provided by microsatellite analysis, select the statement that are true.

A genetic match between a biological parent and his/her child occurs when at the very least 2 of the 13 microsatellite loci analyzed show a common allele In a microsatellite profile, heterozygosity at a specific locus is shown by the presence of 2 different alleles while homozygosity is shown by the presence of a single allele ✓ Microsatellite alleles at a given locus differ in the number of repeats of the specific microsatellite sequence considered O Microsatellite alleles at a given locus differ in the microsatellite sequence itself Meiotic recombination is source of genetic diversity in parental gametes so that biological siblings (with the same biological parents) may not display the same alleles at each of the 13 loci A genetic match between a biological parent and his/her child occurs when at the very least each of the 13 microsatellite loci analyzed show a common allele The DNA profiles of biological siblings - with the exception of monozygotic twins- are never identical Biological siblings always receive the same sets of microsatellite alleles from both of their biological parents (same parents) The DNA profiles of biological siblings (same parents)- with the exception of monozygotic twins- may share some common alleles at some of the loci analyzed The DNA profiles of biological siblings (same parents)- with the exception of monozygotic twins- will never share any common alleles at the loci analyzed Each parent passes on a specific set of chromosomes, that each have a specific allelic composition, to their biological children

My answers above were incorrect, have one attempt remaining. Any help is appreciated.

Answer 1

The sentences that are true are

6. Each parent passes on a specific set of chromosomes, that each have a specific allelic composition, to their biological children.

• Number 6 is true because each parent passes a haploid set of chromosomes to their offspring as a result the ratio of paternal and maternal chromosome becomes 1:1

7. Meiotic recombination is source of genetic diversity in parental gametes so that biological siblings (with the same biological parents) may not display the same alleles at each of the 13 loci.

• Number 7 is true because the genetic sequence of every person is not the same. So, they will not show that particular microsatellite at a fixed place in both persons.

10. The DNA profiles of biological siblings (same parents)- with the exception of monozygotic twins- may share some common alleles at some of the loci analyzed

• Number 10 is true because sometimes due to specific recombination, two persons show some common characters.

11. Microsatellite alleles at a given locus differ in the number of repeats of the specific microsatellite sequence considered

• Number 11 is true because the repetition of microsatellite alleles at a particular microsatellite sequence is not fixed.

Thank you

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