Genetics And Evolution Test Flashcards

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1
Q

Gregor Mendel

A

Austrian botanist who launched science of genetics, studied pea plants, considered father of genetics

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2
Q

Heredity

A

Passing of traits from one generation to another

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3
Q

Geneticist

A

One who studies genetics

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4
Q

Genes

A

Units of heredity

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5
Q

Allele

A

One pair of genes responsible for contrasting traits

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6
Q

Dominant trait

A

Trait that prevents the showing of another trait

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7
Q

Recessive trait

A

Trait that is hidden by presence of dominant trait

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8
Q

Probability

A

Likelihood that a given event will occur

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9
Q

Hybrid

A

In genetics, organism that carries dominant and recessive allele for same trait

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10
Q

Heterozygous

A

In an organism when paired genes for specific trait are not identical

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11
Q

Homozygous

A

In an organism when paired genes for specific trait are identical

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12
Q

Pure read

A

Refers to organism that carries two dominant or two recessive alleles for a trait

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13
Q

Punnett square

A

Table used to predict what trait offspring will have based on what traits parents have

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14
Q

Genetics

A

Study of how traits are passed from parent to offspring

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15
Q

Phenotype

A

Physical appearance of organism

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16
Q

Genotype

A

Set of genes carried by organism

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17
Q

DNA

A

Deoxyribonucleic acid, determines genetic traits, found in nucleus

18
Q

Chromosome

A

Structures located in nucleus, made of DNA, contains genetic info to Cary out cell fuctions

19
Q

Meiosis

A

Process by which chromosomes is reduced by half to form sex cells

20
Q

Sex chromosomes

A

Determine sex of offspring , x and y

21
Q

Sex linked trait

A

Trait carried in X chromosome

22
Q

Keryotype

A

A picture of paired chromosomes of an individual

23
Q

Charles Darwin

A

Developed theory of evolution

24
Q

Theory of evolution

A

describes how organisms changes over many generations

25
Q

Natural selection

A

Process of when organisms develop best traits to fit their environment

26
Q

Genetic variation

A

Normal differences within a species, variety in offspring

27
Q

Mutation

A

Change in genes or chromosome of cell

28
Q

Fossil

A

Preserved remains of an organism from the past

29
Q

Trait

A

Characteristics of organism

30
Q

Extinction

A

All organisms of species die off

31
Q

Adaptation

A

Structure or behaviour that is developed to help organism

32
Q

Ancestor

A

A person from whom is descended from

33
Q

Variations

A

Characteristic of all living things that no two individuals are the same

34
Q

Species

A

Group of similar organism that can mate and produce offspring

35
Q

Body cells

A

Somatic cells

36
Q

Sex cells

A

Gametes

37
Q

Asexual relroduction

A

Mitosis

38
Q

Sexual reproduction

A

Meiosis

39
Q

Watson and crick

A

Figured out structure of DNA

40
Q

Four protiens that make up DNA

A

Adenine, guanine, thymine, cytosine

41
Q

DNA is molecule that does what

A

Carries genetic information for all living things