Answer:
TEs are repetitive and mobile elements, thereby it is hard to trace their origins
Explanation:
Repetitive elements are patterns of nucleotide sequences in the DNA characterized to have multiple copies throughout the genome. DNA mini-satellite and Transposable Elements (TEs) are some examples of highly repetitive DNA. TEs are repetitive mobile elements that have the ability to jump within the genome and occupy a major part of eukaryotic genomes. For instance, there is a type of TEs called retrotransposons which mobilize through a copy-and-paste mechanism, thus increasing their number in a genome. In consequence, TEs represent highly repetitive and dynamic genomic sequences, and thereby it is hard to trace their evolutionary histories.
Answer:

Pink Flower ↔ Pink Flower
.............RW x RW................
..........RR..RW..WR...WW....
RR → 25%
RW → 50%
WW → 25%
<span>The annex is followed for better understanding
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I want to say that the best option to go with will be species so option D.
I think the answer is d ... hope this helps