Answer:
The most recent common ancestor of all currently living organisms is the last universal ancestor, which lived about 3.9 billion years ago. ... 6,331 groups of genes common to all living animals have been identified; these may have arisen from a single common ancestor that lived 650 million years ago in the Precambrian.
Answer:
All objects that have balanced forces acting on them must be stationary is an example of Newton's first law of motion.
Explanation:
- Newton's First law of motion is the Law of inertia, that states a body continues to be in state opf rest or state of motion untill an unbalanced force acts on it.
- So if a body has all balanced forces acting on it then it will continue to remain in state of rest i.e. it will be stationary.
- The first example describes Newton's third law, that every action has equal and opposite reaction.
- The second and third example supports Newton's Second Law, the law of momentum which states that the rate of change oif momentum is directly proportional to the force applied on the body and the mass of the body.
Well, a homologous structure is a bone or something else that is present in many different species that could point to a common ancestor. Since you do not have the examples in your question I will just give you some and hope that it helps you:
The arm of a human, the wing<span> of a bird or a bat, the leg of a dog and the flipper of a dolphin or whale.
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I hope this helped! Let me know if it did not!
I hope you have a fantastical day!!XD
Answer:
Explanation:
The average covariance between securities will be much more important in determining a portfolio’s risk than the average variance, when the portfolio is “well diversified.”
Étant donné que les personnes non apparentées ont presque
certainement un nombre différent d'unités de répétition, les DOS
peuvent être utilisées pour faire la distinction entre des personnes
non apparentées. Ces loci STR (emplacements sur un
chromosome) sont ciblés avec des amorces spécifiques à la
séquence et amplifiés par PCR. ... Ainsi l'analyse STR fournit un
excellent outil d'identification.
