CGL Genetic Genealogy

Question 1

Which type of DNA test traces direct patrilineal ancestry by following the Y chromosome?

Accepted Answer

Y-DNA test

Answer

mtDNA test

Answer

Autosomal DNA test

Answer

X-DNA test

Question 2

What unit is used to measure the length of shared DNA segments between two individuals in genetic genealogy?

Accepted Answer

Centimorgans (cM)

Answer

Base pairs

Answer

Alleles

Answer

Haplogroups

Question 3

Which DNA test is most useful for finding relatives across ALL ancestral lines within approximately 5–6 generations?

Accepted Answer

Autosomal DNA (atDNA)

Answer

Y-DNA

Answer

mtDNA

Answer

X-DNA

Question 4

What does 'endogamy' mean in the context of genetic genealogy?

Accepted Answer

The practice of marrying within a small community, causing elevated DNA sharing among members

Answer

A DNA mutation that skips generations

Answer

The process of comparing DNA across multiple databases

Answer

A method for phasing maternal and paternal DNA segments

Question 5

What does the acronym 'IBD' stand for in genetic genealogy?

Accepted Answer

Identical By Descent

Answer

Inherited Blood Disorder

Answer

Internal Biological Data

Answer

Inferred Biological Distance

Question 6

Which major DNA testing company uses the 'Timber' algorithm to filter out population-level false segment matches?

Accepted Answer

AncestryDNA

Answer

23andMe

Answer

FamilyTreeDNA

Answer

MyHeritage

Question 7

Within how many generations is autosomal DNA testing typically most useful for identifying genealogical relationships?

Accepted Answer

5–6 generations

Answer

2–3 generations

Answer

8–10 generations

Answer

12–15 generations