Biology, 25.11.2019 17:31 slimgemmx

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1. which of the following are evidences of evolution? *
a. fossil record
b. geographic distribution of living species
c. homologous body structures
d. similarities in embryology
e. all of the above

2. which of the following provides evidence that living things have evolved? *
a. fossil record
b. geographic distribution of living species
c. homologous body structures
d. similarities in embryology

3.what are the structures that have different mature forms but develop from the same embryonic tissues? *
analogous body structures
transitional forms
homologous body structures
fossil

t/f: the wing of a bat, human arm, and leg of a turtle are examples of homologous body structures. *

true
false

what are traces of homologous organs in other species (they are often organs that serve no useful function)?
analogous body structures
transitional forms
homologous body structures
vestigial organs

which term means that organisms change over time?
evolution
herpetology
ornithology
paleontology

what is an example of a vestigial organ?
ear
nose
appendix
foot

t/f: in their early stages of development, chickens, turtles and rats look similar, providing evidence that they shared a common ancestry.
true
false

Answers: 2

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Answers

Answer from: googoomylizard

One of the greatest proofs of evolution is the existence of fossil records.

Evolution refers to the gradual changes that took place in living organisms over time. One of the greatest evidences of evolution is the existence of fossil records.

Homologous Body Structures are the structures that have different mature forms but develop from the same embryonic tissues. It is a true statement that the wing of a bat, human arm, and leg of a turtle are examples of Homologous Body Structures.

The traces of homologous organs in other species in which they no longer serve a function are called vestigial organs. The appendix in humans is a vestigial organ.

It is a true statement that in their early stages of development, chickens, turtles and rats look similar, providing evidence that they shared a common ancestry.

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Answer from: pennygillbert

1:e

2:d

3: homologous structure

4:true

5: vestigial structures

6: evolution

7: appendix

8:true

Answer from: Quest

1. true.2. true.3. true.4. false.5. true.the concept of darwin's theory of evolution involves the idea that there are limited resources in a given living environment and that the organisms which live within have variations in their genetic make up due to random mating. the ones with beneficial genetic variations can express certain traits which give them an upper hand in surviving and reproducing in the said environment compared to ones who may have a more disadvantageous variation in traits. over time, the organisms with an upper hand will survive and reproduce more frequently and pass on their beneficial genes while the others die. the result is evolution, where we observe (usually, but not always) eventually, phenotypic distinct changes.

Answer from: Quest

the diploid number of chromosomes is sometimes represented by the symbol 2n. for the fruit fly, the diploid number is 8, which can be written as 2n = 8, where n represents twice the number of chromosomes in a sperm or egg cell.