Ch. 11 Flashcards

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0
Q

Genetics

A

The scientific study of heredity

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1
Q

Inheritance

A

Things passed on from one generation to the other

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2
Q

True breeding

A

If allowed to self pollinate they would produce off spring identical to themselves

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3
Q

Trait

A

a specific characteristic that varies from one individual to another

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4
Q

Hybrid

A

Result from cross of parents with different traits

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5
Q

What is the offspring of the parent called?

A

F1

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6
Q

After they are crossed how many factors are there for each trait?

A

2

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7
Q

When parents transmit information about traits to their offspring

A

Factor/genes

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8
Q

What are the alternative forms of the factors called?

A

Alleles

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9
Q

Where do the two alleles come from?

A

Mother and father

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10
Q

Principle of dominance

A

Some alleles are dominant and some are recessive

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11
Q

Elle’s that will always be present

A

Dominant

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12
Q

Alleles that are not shown when a dominant is present

A

Recessive

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13
Q

Pure homozygous

A

Two of the same genes (alleles) for a trait

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14
Q

Hybrid/heterozygous

A

Two different alleles for a trait

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15
Q

Combination of alleles or genes for a certain trait

A

Genotype

16
Q

Visible traits

A

Phenotype

17
Q

Why do recessive phenotype reappear and show?

A

They were segregated from the dominant allele during the formation of the gametes

18
Q

Law of Segregation

A

Members of each pair of alleles separate when gametes are formed. A gamete will receive one allele or the other

19
Q

What do alleles together makeup?

A

Genotypes

20
Q

A method using probability to predict the outcome of the crosses

A

Punnent square

21
Q

Monohybrid

A

Crosses that involve one trait

22
Q

Dihybrid

A

Crosses that involve two traits

23
Q

Law of Independent Assortment

A

Genes for different traits can segregate independently during the formation of gametes

24
Q

Incomplete dominance

A

The phenotype of the heterozygote is in between those of the homozygous parents

25
Q

What is an example of incomplete dominance?

A

Red and white flower=pink flower

26
Q

Co-Dominance

A

The phenotype of the offspring expresses the phenotype of each parent equally

27
Q

Sex-linked

A

Traits are controlled by genes located on the sex chromosomes, the sex chromosomes determine whether the baby will be a boy or girl

28
Q

Hemophilia

A

A blood disease when your blood does not clot easily (make scabs)

29
Q

How many genes are there for color blindness?

A

3

30
Q

Multiple Alleles

A

When two or more alleles exist for one gene, each organism can have just two

31
Q

What are some examples of thing with multiple alleles?

A
  1. Eye color
  2. Rabbit coat color
  3. Human blood type
32
Q

What are the different types of blood types?

A
  1. A
  2. B
  3. AB
  4. O
33
Q

How is O blood written?

A

II or ii, Ii

34
Q

Polygenic

A

Traits are produced by the interaction of several genes