In the picture above about half of the chromosomes have two colors, while the other half do not. What most likely accounts for some of these chromosomes not being mixed? Group of answer choices

They did not have a homologous chromosome

They were the outer chromatids of the tetrad

Crossing over did not occur at all in the parent cell

They did crossing over twice and ended up the same again

bc blah

explanation:

bc blah

nucleic acid molecules are incredibly complex, containing the code that guarantees the four different nucleotide units comprise dna, the nucleic acid of interest to the genealogist. and one of four nitrogen-containing molecules called nucleotides

her next move would be to use agarose gel electrophoresis to separate the dna molecules of varying length and create a dna fingerprint.