Evolution And Heredity Flashcards

(46 cards)

1
Q

Heredity and evolution are linked together by

A

Inheritable traits

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2
Q

……are the base of heredity

A

Chromosomes

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3
Q

Physical base of heredity

A

Genes

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4
Q

Chemical basis of heredity are

A

Dna

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5
Q

…….control traits

A

Genes

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6
Q

……is the study of transmission of genetic character from one generation to another

A

Heredity

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7
Q

The process of transfer of heredity material from one generation to another

A

Genetics

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8
Q

What is genotype

A

The genetic constitution of an organism

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9
Q

External feature of an organism is

A

Phenotype

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10
Q

Inheritance can be categorized into

A

Law of dominance
Law of segregation
Law of independent assortment

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11
Q

Wht does law of dominance say

A

Offspring of crossbreed parents only show dominant characteristics in f1 generation

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12
Q

……..is the process that determines the biological sex of an offspring and as result the sexual characteristics that they will develop

A

Sex determination

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13
Q

Another name for sex chromosomes are

A

Allosomes

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14
Q

Full meaning of Dna

A

Deoxyribonucleic acid

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15
Q

Theory developed by darwin

A

Theory of natural selection or darwinism or theory of evolution

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16
Q

In what yr did darwin publish his book

A

1859

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17
Q

Mendel conducted his experiment

A

Btw 1856 and 1863

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18
Q

Mendel submitted his result in the yr

A

1865

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19
Q

One single cell contain how many genes

A

20,000-30,000 genes

20
Q

Genes are made up of

21
Q

Meaning of Rna

A

Ribonucleic acid

22
Q

There are…….living species

23
Q

Wht are homologous organ

A

HB the same structure but different function

Eg is the limb of man and reptile

24
Q

Wht are Analogous organ

A

That hv the different function but same structure

Eg wing of bat and bird

25
Wht is genome
All genetic information of an organism
26
Our evolutionary history is written in our
Genome
27
Primate development diverge from other mammal
85 million yrs ago
28
Homini(including humans and chimpanzees) separates from grilling abot
8million yrs
29
Humans and chimps separated about
7.5 million yrs
30
How many main stages of human evolution are there
Four
31
First stage consist of wht? | And btw what yr
``` Proto hominins(sahelanthropus,ororins, ardipithecis) Four to seven million yrs ```
32
Second stage was in what yr? | And marked by the appearance of
Four million years ago | Australopithecus
33
Third stage featured | Around?
Paranthropus | 2.7 million yrs
34
Fourth stage featured the genus homo
1.8 to 2.5 million
35
.......which homo use stone tools and has brain the size of a chimpanze
Homo habilis
36
........... Homo had double the Brain size and may hv been the first to control fire
Homo erectus and ergaster
37
Homo heidelbergenesis appeared
800,000
38
Homo sapiens appeared
200,000 yrs ago
39
Human acquired symbolic culture and language around
50,000 yrs
40
......... Deemed to be the ancestors of man
Dryopithecus
41
Fossil of australopithecus was first discovered in
South Africa
42
First fossil of homo erectus were found in
Java
43
The two sub species of homo sapiens are
Homo sapiens sapiens | Homo sapiens neanderthalensis
44
Human sapiens were first discovered in
Europe
45
Homo sapiens neanderthalensis could......
Hunt big animals such as mammoths
46
Homo sapiens sapiens cranial capacity is abt
1350c