問題一覧
1
Select statements about the fossil record that are true?
fossils also show that some species such as horseshoe crab have remained unchanged for millions of years, transitional fossils provide detailed patterns of evolutionary change for the ancestors of many modern animals including horses whales and humans, the fossil record can show how ancient species are similar to current species
2
What is an example of analogous structures
the wings of an eagle and the wings of a dragonfly
3
Darwin reasoned that some competitors in the struggle of existence would be better equipped for survival rather than others. Those are less equipped would die. This is the process of
natural selection
4
The idea that if Earth's early atmosphere had a mix of certain gases, organ, molecules could have been synthesized from simple reactions involving those gases in the early oceans in the
primordial soup
5
Transitional fossils provide detailed patterns of evolutionary change for the ancestors of many modern animals. Which is an example of a transitional fossil?
certain dinosaur fossils, such as, Archoeopteryx show feathers of modern birds and teeth and bony tails of reptiles
6
The process of directed breeding to produce offspring with desired traits referred to as selective breeding was called by Darwin
artificial selection
7
The earliest fossils are billion years old
3.5
8
Is a method used to determine the age of rocks by comparing them with those in other layers
relative dating
9
Which is the name of the theory in which evolution proceeds in small, gradual steps?
gradualism
10
Any change in the alleic frequency in a population that results from chance is called
genetic drift
11
A(n) is the trade shaped by nature selection that increases in an organisms reproductive successes
adaptation
12
True or false: The wings of an eagle and the wings of a dragonfly are analogous structures
true
13
All of the following are examples of vestigial structures except
the forelimb of a porpoise
14
Which theory states that the ancestors of an eukaryotic cells lived in association with p rokaryotic cells?
endosymbiont theory
15
Males are affected by recessive X-linked traits more often than ate females because they only have X chromosome
one
16
Mendel's experiments with pea plants resulted in
increased insights into the inheritance of traits, the development of the law independence assortment , the development of law segregation
17
Which is a substitution mutation that can cause alkaptonunia
missense
18
Which enzyme adds a short segment of RNA, called an RNA primer, on each DNA strand as it unwinds?
RNA primase
19
Sometimes a permanent change occurs in a cell's DNA and this is called a
mutation
20
Which type of RNA carries genetic information from DNA in the nucleus to the cytoplasm
mRNA