Sentences with phrase «hypotheses about the origins»

Natural selection is a falsifiable hypothesis about the origin of design and imposes onerous empirical requirements.

In addition to sequencing the woolly mammoth genome, Hendrik has reconstructed the diets of extinct giant sloths, debunked a hypothesis about the origin of human immunodeficiency virus (HIV) and sequenced the genome of the bacterium that caused Black Death.

While Law has his pet hypothesis about the origin of fast radio bursts — a magnetar surrounded by either material ejected by a supernova explosion or material ejected by a resulting pulsar — there are other possibilities.

In particular, none of the hypotheses about their origin explain why individual ring particles, which range in size from hailstones to small boulders, average between 90 % and 95 % ice.

They can encode several genes potentially involved in protein biosynthesis, a unique feature which has led to diverging hypotheses about the origins of these viruses.

Not exact matches

So the study has not only made it possible to confirm the Eurasian origin of the U6 lineage but also to support the hypothesis that some populations embarked on a back - migration to Africa from Eurasia at the start of the Upper Palaeolithic, about 40 - 45,000 years ago.

Aucott cautions that because so little is known about the origins of PTLDS, its underlying cause has remained unclear, and a range of hypotheses exist.

These constraints transformed the results from what Gray's team has published: Garrett, Chang, and their colleagues found that the origins of PIE were about 6000 years ago, consistent with the steppe hypothesis but not the Anatolian, because the farming migration out of the Middle East was 8000 years ago.

The findings help iron out a big wrinkle in the giant impact hypothesis, the only idea about the moon's origin that hasn't been shot down yet, says Harvard University planetary scientist Sarah Stewart, who was not involved with the study.

Duax also noted that the results raise questions about some aspects of a hypothesis on the origins of life, called the RNA world, which posits that RNA, which is similar to DNA and is still used in cells, was the first genetic material.

Chris talks about the developmental origins hypothesis, or the idea that the diet of the mother (and father) before pregnancy and during pregnancy (for the mother) have an impact on the lifelong health of the child.