Final Flashcards

(56 cards)

0
Q

Describes the genotype of a trait for which the two alleles an individual carries differ from each other (Aa)

A

Heterozygous

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1
Q

Describes the genotype of a trait for which the alleles are the same (AA or aa)

A

Homozygous

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2
Q

The allele which is expressed

A

Dominant

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3
Q

The impact of a single gene on more than once characteristic is called? Ex: sickle cell anemia

A

Pleiotrophy

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4
Q

The law of __________ states: allele pairs for different genes separate independently in meiosis, so the inheritance of one trait does not influence the inheritance of another trait.

A

Independent assortment

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5
Q

Sex linked traits are carried on the ____ chromosome.

A

X

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6
Q

The exception to mendel’s law do independent assortment are?

A

Linked genes

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7
Q

The physical expression of a trait is:

A

Phenotype

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8
Q

The genetic code for a trait is:

A

Genotype

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9
Q

Which of the scientists came up with the accepted theory of evolution in his book “the origin of species?”

A

Charles Darwin

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10
Q

When there is a change in allele frequency within a population

A

Evolution

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11
Q

__________ is an alteration of the base pair sequence in the DNA of an individual’s gamete producing cells that changes an alleles frequency

A

Mutation

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12
Q

A random change in allele frequencies, unrelated to any alleles influence or reproductive success is known as?

A

Genetic drift

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13
Q

__________ occurs when a new colony is started by a few members of the original population.

A

Genetic drift: founder effect

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14
Q

________ occurs when the population is reduced for at least one generation due to catastrophic event. Ex: cheetahs

A

Genetic drift: bottleneck effect

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15
Q

_______ occurs when a group of individuals leave one population to join another separate population.

A

Migration/gene flow

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16
Q

Divergent evolution is?

A

The accumulation of differences between groups which can lead to the formation of new species, usually due isolation from the original population (common ancestor)

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17
Q

Convergent evolution is?

A

The process whereby organisms not closely related independently evolve similar traits as a result of having to adapt to similar environments or ecological niches

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18
Q

Convergent evolution can occur only when two species:

A

Evolve under similar selective forces

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19
Q

When humans breed animals for a specific trait ________ has occurred.

A

Artificial selection

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20
Q

What is the shape of the DNA molecule?

A

Double helix

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21
Q

The set of nucleotide bases on the DNA that codes for a protein is a?

A

Gene

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22
Q

A four part structure that forms during the prophase of meiosis 1 and consists of two homologous structures

A

Tetrad/bivalent

23
Q

An alternative form of a gene?

24
What are the three stages of interphase?
G1, synthesis, G2
25
Synthesis of DNA occurs in which stage of interphase?
Synthesis
26
A pseudogene is best defined as?
A false gene which no longer codes for a product
27
In asexual reproduction, daughter. Ellis inherit their DNA from?
A single parent
28
What is occurring during the anaphase of mitosis?
The chromatids are being pulled apart towards the poles
29
The results of mitosis Are?
2 diploid cells
30
The results of meiosis are?
4 haploid cells
31
Crossing over occurs during?
Prophase 1
32
Crossing over is?
A process occurring during meiosis when two chromosomes pair up and exchange segments of their genetic material
33
The three types of point mutations are?
Substitution, insertion, deletion
34
The majority of most eukaryotic cells spend the majority of their life in?
Interphase
35
Mitosis is important for?
Growth and repair
36
Meiosis is important for?
Sexual reproduction
37
The majority of our DNA contains non coding areas. What is this non coding DNA called?
Introns
38
Where does translation occur within the cell?
Cytoplasm
39
Neurons are in this sub-state of interphase indefinitely and do no undergo mitosis:
G0
40
Prokaryotic cells divide via:
Binary fission
41
The correct order of the stages of mitosis are?
Prophase, prometaphase, metaphase, anaphase, telophase
42
The division of the cytoplasm creating two distinct cells in mitosis is known as?
Cytokinesis
43
The main benefit of asexual reproduction is?
Genetic similarity
44
The organisms: animals, fungi, Protozoa, and algae have which type of cell?
Eukaryotes
45
The organisms: bacteria and archaea have while type of cells?
Prokaryote
46
The movement of molecules from am area of high concentration to an area of low concentration
Diffusion
47
Eukaryotic cells may contain all of the following except?
Circular DNA
48
Which organelle is involved in cellular respiration?
Mitochondria
49
How are enzymes named?
The first part is the name of the substrate; the second part is the type of reaction and ends on -ase
50
The ETC in cellular respiration occurs where?
The cytoplasm
51
The result of the ETC following ps1 in photosynthesis is?
The production of NADPH
52
The result of the ETC following ps2 in photosynthesis is?
The production of ATP
53
________ is an energy-using process by which cells absorb molecules by engulfing them
Endocytosis
54
The stage of cellular respiration which occurs in the cytoplasm is?
Glycolysis
55
The spontaneous movement of solvent molecules through a particularly permeable membrane into a region of higher solute concentration is known as?
Osmosis