CH 5: Paternity testing

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What is the purpose of paternity testing?

To compare blood groups and DNA profiles to establish paternity (correct)

To determine the gender of the child

To analyze the mother's DNA

To identify the child's blood group

How do blood groups help in indicating possible paternity?

If mother's and potential father's blood groups cannot produce child's blood group, man is not the father (correct)

Child's blood group must match exactly with the father's blood group

Blood grouping is not as reliable as DNA profiling

Blood group comparison can definitively confirm paternity

Why is DNA profiling considered more reliable than blood grouping for paternity testing?

DNA profiling examines similarities in nucleotide sequences between father and child (correct)

DNA profiling compares the mother's and possible father's DNA directly

Blood grouping does not involve analyzing nucleotide sequences

Blood grouping only looks at 50% of the child's DNA fragments

In paternity testing, what does it mean if 50% of the child's DNA fragments match those of the potential father?

The child inherited exactly half of its DNA from the father Signup and view all the answers

Why can blood grouping be inconclusive in determining paternity?

Many men may share the same blood group Signup and view all the answers

What is the purpose of paternity testing involving DNA profiling?

To analyze nucleotide sequences in the DNA of the father and child Signup and view all the answers

Why can blood grouping alone sometimes be inconclusive in determining paternity?

Many men may share the same blood group Signup and view all the answers

In paternity testing, what does it mean if the child's blood group could not have been produced by those of the mother and potential father?

The man is not the father Signup and view all the answers

How does comparing DNA fragments between a child and a potential father help in paternity testing?

To identify if a child has 50% DNA from each parent Signup and view all the answers

Why is DNA profiling preferred over blood grouping for paternity testing?

DNA profiling provides more reliable evidence for paternity Signup and view all the answers

What aspect of a child's DNA is crucial in confirming paternity when comparing with a potential father?

Nucleotide sequences Signup and view all the answers

Why may two individuals having the same blood group not be genetically related?

Many people have the same blood group Signup and view all the answers

What percentage of DNA fragments should match between a child and a potential father to support the claim of biological paternity?

50% Signup and view all the answers

What can be deduced if the child's blood group could not have been produced by those of the mother and potential father?

The man is not the father Signup and view all the answers

Why is DNA profiling considered more conclusive than blood grouping for paternity testing?

DNA profiling involves comparing nucleotide sequences which are unique to each individual Signup and view all the answers

If 50% of the child's DNA fragments match those of a potential father, what does this suggest?

The man could be the biological father Signup and view all the answers

Why is comparing DNA fragments between a child and a potential father more reliable for paternity testing than comparing blood groups?

Blood groups are less specific than DNA fragments Signup and view all the answers

What limitation of blood grouping for paternity testing is highlighted in the text?

Many individuals may share the same blood group Signup and view all the answers

How does the presence of shared blood groups among unrelated individuals impact paternity testing?

It can lead to inconclusive results in determining paternity Signup and view all the answers

What makes DNA profiling a more preferable method for determining paternity compared to blood grouping?

DNA profiling provides more conclusive evidence based on unique genetic markers Signup and view all the answers

Why can two individuals having the same blood group still not be genetically related according to the text?

Shared blood groups do not determine genetic relationships Signup and view all the answers