Science Chapter 6.3-6.6 Flashcards

0
Q

Genetics

A

The study of biological inheritance patterns and variations in organisms

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1
Q

Trait

A

Distinguishing characteristics that are inherited such as I color and or leaf shape

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2
Q

Purebred

A

Inherit all of the parent organism characteristics

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3
Q

Cross

A

The mating of two organisms

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4
Q

Law of inheritance or segregation

A

Organisms inherit two copies of each gene one from each parent
Organisms donate only one copy of each gene in their gamete it’s bus the two copies of each gene segregate or separate during gamete formation

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5
Q

Gene

A

Piece of DNA that provides a set of instructions to a cell to make a certain protein

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6
Q

Allele

A

Is any of the alternative forms of a gene that may occur at a specific locus

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7
Q

Homozygous

A

Describes to the same alleles at a specific locus

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8
Q

Heterozygous

A

Describes two different alleles at a specific locus

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9
Q

Genome

A

Is all of an organism’s genetic material

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10
Q

Genotype

A

typically refers to the genetic makeup of the specific set of genes

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11
Q

Phenotype

A

Physical characteristics or traits of an individual organisms make up

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12
Q

Dominant

A

Allele is that a Leo that is expressed went to different alleles or two Dominant alleles are present

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13
Q

Recessive

A

Allele is the allele that is only expressed went to copies of present

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14
Q

Punnett square

A

Is the grid system for predicting all possible genotypes of offspring

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15
Q

Monohybrid crosses

A

Crosses that examine the inheritance of only one specific trait

16
Q

Test cross

A

Is a cross between an organism with an unknown genotype in an organism with the recessive phenotype

17
Q

Dihybrid crosses

A

Crosses that examine the inheritance of two different traits

18
Q

Law of independent assortment

A

States that a Leo pairs separate independently of each other during gameate formation

19
Q

Probability

A

Is the likelihood that a particular event will occur

20
Q

Crossing over

A

Is the exchange of chromosomes segments between homologous chromosomes during prophase one of meiosis 1

21
Q

Genetic linkage

A

Genes located close together tend to be inherited together