With which archaic human species did some of the ancestors of modern europeans interbreed during the past 100,000 years

1 answer:

8 0

Around 100,000 years ago there was another species of the Homo genus living throughout Europe, he Homo neanderthalensis, or commonly called the Neanderthals. This extinct species was the closest relative to modern humans. Genetic studies of neanderthal DNA have shown that in modern humans that live outside of Africa there are3 to 4 percent of genes that have a neanderthal origin which implies that there were multiple interbreeding events in the history of these two species.

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Structures as different as human arms, bat wings, and dolphin flippers contain many of the same bones, these bones having develo

kobusy [5.1K]

Answer:

The biologists clarify these similarities as a homologous pair. This is based on the principle of convergent evolution.

Explanation:

Convergent evolution is understood by the phenomenon of development of similar organs in different species in different period. Those homologous pair have same structure but can have different function in the different species of organism. 

The bone of human arms, wings of the bat and dolphin flippers contain many of same bones which have developed from the same embryo tissue but the function for each is different in different species.

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(I already know number 1)

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Neporo4naja [7]

A) toward the earth ...hope this hlep

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Which event occurs after erosion of Earth’s surface?

Arisa [49]

Deposichen will drop

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Acetylcholine binds to a GPCR on heart muscle, making the heart beat more slowly. The activated receptor stimulates a G protein,

kogti [31]

Answer:

The correct answer is option (b) "addition of a drug that prevents the α subunit from exchanging GDP for GTP".

Explanation:

The G protein is a name given to a family of proteins that act as a switch in diverse cellular processes, transmitting signals from outside to inside of the cells. When a G protein receptor is activated by a neurotransmitter such as dopamine, the alpha subunit exchanges its GDP for a GTP and disassociates G-protein itself. An addition of a drug that prevents this action would prevent G protein disassociation, which would enhance the effect of stimulating G protein that acetylcholine does.

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