Download Crossword 16.4 Evidence of Evolution

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16.4 EVIDENCE OF EVOLUTION
FOUNDATIONS
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Name ___________________________________
16.4 EVIDENCE OF EVOLUTION
FOUNDATIONS
Period _____
Date ___________
Seat ______
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In Darwin's time the fossil record to show clearly how modern species had descended from their
ancestors was __. (394)
Darwin noted that closely related organisms that live in __ environments often show great
differences, like the finches and tortoises of the Galapagos Islands. (392)
Inherited structures that have lost much of their original function (like the hipbones of dolphins and
the human appendix) are called __ structures. (393)
Body parts that share a common function but are not structurally related (like the wings of bees,
bats, and birds) are called __ structures. (393)
The name of the extinct organism which means "walking whale." (394)
Peter and Rosemary __ studied finches on the Galapagos Islands in order to test Darwin's ideas
about natural selection. (Last name) (396)
A species of finch that feeds on large, thick seeds with a beak that is thick, strong, and sharp. (396)
A species of finch that feeds on insects, fruit, and nectar using a curved, needle-nose pliers-like
beak. (396)
During Darwin's time, enough fossils had been found to __ Darwin that life had changed over time.
(394)
Recently, scientists have discovered more than __ fossils that show how whales evolved from
ancestors that walked on land. (394)
Bird limbs are more like reptile limbs than mammal limbs. This means that birds and reptiles are
more closely __ than birds and mammals. (393)
Darwin hypothesized that birds on the Galapagos islands were descended from birds in __. (Two
words) 392)
The study of where organisms live and where their ancestors lived in the past. (392)
Darwin noted that distantly related organisms that live in __ environments are often similar. (392)
Geologists use a tool called __ to find the age of rocks, fossils, and the Earth itself. This technique
suggest the Earth is about 4.5 billion years old, which is plenty long for evolution to occur. (Two
words) (394)
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Homologous structures often show __, or differences from one animal to another, like the bones in
the wings of bats and birds.(393)
Structures that are shared by related species and that have been inherited from a common ancestor
(like the bones in the fins of whales and the arms and hands of humans) are called __ structures.
(393)
What the large beak finches fed on that the smaller beaked finches couldn't during long dry periods?
(Two words) (396)
Evolutionary theory explains that homologous structures adapted to different __ are the result of
descent with modification from a common ancestor. (393)
In Darwin's time, researchers discovered that the front legs of amphibians, birds, and reptiles all
have the same basic __, which led Darwin to suggest that animals with similar structures were
related. (392)
The fact that the protein cytochrome c is found in yeasts, plants, fungi, and animals, all of which use
it to shuttle electrons in cellular __, is evidence of common descent. (395)
An ancient, whale-like creature that had a streamlined body and reduced (vestigial) hind limbs. (395)
The shared __ is evidence that all organisms evolved from a common ancestor that used DNA and
RNA to make proteins and pass on genetic information. (Two words) (395)
During dry seasons, when food was hard to find, the Grants observed that the finches with the __
beaks were most likely to survive. (396)
Similar patterns of __ development provide evidence that organisms have descended from a
common ancester. (393)