Y-Chromsome and Mitochondrial DNA Haplotypes | Biology | Quiz

Only females can trace their mitochondrial DNA (mtDNA) lineage back through their foremothers.

false

true
Genetic sequences that we inherit from only parent are called _____.

haplotypes

autosomal genes

genome

DNA
When scientists create a family tree and identify the MRCA, they are speaking about the _____.

Most Reputed Common Ancestor

Minimally Related Common Ancestor

Most Recent Common Ancestor

Minimally Random Common Ancestor
The Jewish priesthood (Kohanim) provides a lesson on the utility of haplotypes in population research because:

It demonstrates the phenomenon of pedigree collapse.

Since William Sanchez was a priest made it more likely that would carry a Jewish Y-chromosome haplotype.

It identifies people who are at particular risk for diseases that typically affect Jewish people.

It is passed down from father to son and therefore identifies men who share Y-chromosome sequences.
Mitochondria have some of their own DNA because

They come from your mother.

They likely evolved from autonomous bacterial cells.

They are organelles.

They are found within cells.
The mtDNA haplotypes can be linked to a last common mitochondrial ancestor, sometimes called the mitochondrial Eve.

true

false
Research on _____ reveals gene flow, interbreeding between Neanderthals and modern humans.

bacteria

haplotypes

mtDNA

Y-chromosomes
_____is when distant relatives mate with each other creating a family tree in which an ancestor will appear in multiple places.

pedigree collapse

pedigree increase

descendent collapse

descendent increase