life hacks 4

Question 1

DNA

Answer 1

a molecule that is present in all living cells and that contains the information that determines the traits that a living thing inherits and needs to live

Question 2

Nucleotide

Answer 2

a nucleic-acid chain.

Question 3

Chargaff’s Rules

Answer 3

Chargaff’s rules state that DNA from any cell of any organisms should have a 1:1 ratio of pyrimidine and purine bases and, more specifically, that the amount of guanine should be equal to cytosine and the amount of adenine should be equal to thymine. This pattern is found in both strands of the DN

Question 4

Watson and Crick

Answer 4

Francis Harry Compton Crick OM FRS (8 June 1916 – 28 July 2004) was a British molecular biologist, biophysicist, and neuroscientist, most noted for being a co-discoverer of the structure of the DNA molecule in 1953 with Rosalind Franklin and James Watson.

Question 5

Rosalind Franklin

Answer 5

Rosalind Elsie Franklin was an English chemist and X-ray crystallographer who made contributions to the understanding of the molecular structures of DNA, RNA, viruses, coal, and graphite

Question 6

Mutations

Answer 6

a change in the nucleotide base sequence of a gene or DNA molecule

Question 7

Adaptation

Answer 7

a characteristic that improves an individuals ability to survive and reproduce in a particular environment.

Question 8

Species

Answer 8

a group of organisms that are closely related and can mate to produce fertile offspring

Question 9

Evolution

Answer 9

the process in which inherited characteristics within a population change over generations such that a new species sometimes arise

Question 10

Fossils

Answer 10

the remains or physical evidence of an organism preserved by geological processes

Question 11

Fossil Record

Answer 11

a historical sequence of life indicated by the fossils found in layers of the Earths crust

Question 12

Charles Darwin

Answer 12

Charles Robert Darwin, FRS FRGS FLS FZS was an English naturalist, geologist and biologist, best known for his contributions to the science of evolution

Question 13

Trait

Answer 13

a genetically determined characteristic

Question 14

Selective Breeding

Answer 14

the human practice of breeding of animals or plants that have certain desired characteristics.

Question 15

Natural Selection

Answer 15

the process by which individuals that are better adapted to their environment survive and reproduce more successfully than less well-adapted individuals do

Question 16

Generation Time

Answer 16

In population biology and demography, the generation time is the average time between two consecutive generations in the lineages of a population. In human populations, the generation time typically ranges from 22 to 33 years

Question 17

Speciation

Answer 17

the formation of new species as a result of evolution

Question 18

Primates

Answer 18

the chief bishop or archbishop of a province

Question 19

Hominid

Answer 19

a primate of a family ( Hominidae ) that includes humans and their fossil ancestors and also (in recent systems) at least some of the great apes.

Question 20

Homo sapiens

Answer 20

Humans are the only extant members of the subtribe Hominina. They are characterized by erect posture and bipedal locomotion; high manual dexterity and heavy tool use compared to other animals; open-ended …