FHGEN 352, Week 4 – 5 Exam Questions
With Correct Answers A+
How much of a childs DNA does he or she inherit from each parent - Answer50%
Because of recombination, how much of a child's DNA does he or she inherit from each
grandparent? - AnswerIt varies
True or false? Despite recombination, ...
How much of a childs DNA does he or she inherit from each parent - Answer✔50%
Because of recombination, how much of a child's DNA does he or she inherit from each
grandparent? - Answer✔It varies
True or false? Despite recombination, it is possible to determine the likely amount of DNA that
two close relatives might share. - Answer✔True
What percentage of DNA are you likely to share with a second cousin once removed based on
atDNA inheritance patterns? - Answer✔1.563%
True or false? Because of recombination, it is unlikely that any two grandchildren of a common
ancestor will share the exact same inherited genetic material from that ancestor. - Answer✔True
True or false? By comparing segments of DNA between closely related individuals, it is possible
to determine which segments of atDNA were inherited from which ancestors. - Answer✔True
In discussing the genealogical and genetic family trees, which statements are true? Select all that
apply. - Answer✔Half siblings will not share the same genetic family tree.
Ethnicity is nearly impossible to fully predict because an individual does not inherit DNA from
every ancestor in the genealogical family tree.
Identical siblings always share the same genetic family tree.
Which statement about current atDNA tests available at 23andMe, AncestryDNA, and Family
Tree DNA is true? - Answer✔They determine the nucleotide value for hundreds of thousands of
SNPs.
True or false? One purpose of testing companies setting a "minimum segment length" is to
maximize the possibility that the identified matches are recent genetic cousins. - Answer✔True
True or false? The more segments two people share in common and the longer those segments
are, the greater the likelihood that the two individuals share a common ancestor outside the
genealogical relevant time frame. - Answer✔False
True or False - You are expected to share 425 cM of DNA with your great-great grandparents. -
Answer✔True
True or False? A genetic match may be related to you on more than one branch of your family
tree. - Answer✔True
Which statements are true about genetic cousins or "matches" identified by the major testing
companies? Select all that apply. - Answer✔Matches must have identical DNA segments that
meet the minimum cM threshold set by the company.
The matches are found by the comparison of the test taker's DNA to the DNA of every other
person in the company's database.
Matches may share a segment of DNA by chance.
Matches may share a segment of DNA by sequencing or interpretation error.
True or false? Some relatives that you have identified in your genealogical family tree and have
taken a DNA test at the same company as you did will not show up in your "matches" list. -
Answer✔True
True or false? The use of in common with (ICW) tools, matrix charts, and other tools to help
identify the possible relationships of matches with test takers should be paired with traditional
genealogical research to help determine the actual relationship between genetic cousins. -
Answer✔True
Which statements are true about the purposes of atDNA testing? Select all that apply. -
Answer✔atDNA testing helps with the identification of genetic cousins.
atDNA testing may answer a question about the suspected ethnicity of a recent ancestor.
atDNA results can be used to identify which segments of DNA come from which ancestors
through the use of genetic "mapping."
atDNA testing can be used to identify possible health issues.
Pick one. You are always expected to share DNA with all those who are . - Answer✔2nd cousins
or closer in their relationship with you
2
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