Biology Questions and Answers
- What are fossils?
Fossils are petrified vestiges of beings
that livechemical and geological prd in the past conservocessesed by and (^)
found within rocks and sedimentary
strata of the terrestrial crust.
- How does the study of
fossils strengthen the theory
of evolution?
The study oextinct species havinf fossils reveals ancient ag many similar nd
structures to others of the present and
of the past. Fossilsdating to estimate the periods d still allow radioactiveuring
which species lived and to establish a
chronological relationship them. Those evidences strebetweenngthen the (^)
hypothesis of relationship and common
origin amfeatures have modified gradually uong species and that theirntil (^)
the formation of the current species.
- Historically what were the
two main evolutionary
theories?
The two main evolutionary theories
were lamarckism and darwinism.
- What is meant by the law of
use and disuse and by the law
of the transmission of
acquired characteristics?
According to the law of use and disuse
the characteristicsmore or less used. This rule is valid f of a body vary as it isor
example for features like the muscular
mass and the size of the bones.
The law of the transmission of acquired
characteristicsthat parents could transmit to th in its turn establisheeir d
offspring characteristics acquired by the
law of use and disuse.- What is lamarckism?
Lamarckismlaw of use and disuse with t is the theory that uhe law onites thf e
the transmission of characteristics, i.e., that asserteacquired (^) d that
acquired characteristics, for example,
the musculartransmitted f mass, coulrom a parent to itsd be (^)
offspring.
The theory wasnaturalist Lamarck proposed by the French in the beginning of
the 19th was not so absurd sinccentury. At that time the e nobody knewidea
how the transmission of characteristics occurred. (Lamarck hahereditary (^) d
great merit in introducing an
evolutionary at a time dominated by fixism.)theory based in natural law
- Who was Charles Darwin?
Charles Darwinaturalist born in 1809 n was an Englishand consid (^) ered
the father of the theory of evolution. the end of the year 1831, before turningAt (^)
23 years ovolunteer scientistf age, Darwin embarked as on the ship the
Beagle for a five year expedition to the
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