<span>Lactase persistence, the ability to digest the milk sugar lactose in adulthood, is highly associated with a T allele situated 13,910 bp upstream from the actual lactase gene in Europeans. The frequency of this allele rose rapidly in Europe after transition from hunter–gatherer to agriculturalist lifestyles and the introduction of milkable domestic species from Anatolia some 8000 years ago. Here we first introduce the archaeological and historic background of early farming life in Europe, then summarize what is known of the physiological and genetic mechanisms of lactase persistence. Finally, we compile the evidence for a co-evolutionary process between dairying culture and lactase persistence. We describe the different hypotheses on how this allele spread over Europe and the main evolutionary forces shaping this process. We also summarize three different computer simulation approaches, which offer a means of developing a coherent and integrated understanding of the process of spread of lactase persistence and dairying.</span>
Answer:
The correct answer is - Archaea and Bacteria.
Explanation:
There are three different domains of life on earth; Archaea and Bacteria are two domains that are completely single-celled prokaryotic cells that lack a nucleus and other double-membrane organelles.
These both domains are very much similar and has their own difference to be categorized in two other domains. The eukarya domain on other hand has different kinds of organisms like unicellular to multicellular organisms.
The ear has the tinest bones in the body. There are three bones in the ear. Hopes this helps you.
Hey!
Your answer is B (You're correct)
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