Chapter 9 Flashcards

0
Q

what is heredity

A

the transmission of traits from parents to offspring

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1
Q

example of true breeding stains

A

purple plants only produce purple offspring

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2
Q

who discovered the basic principles of heredity

A

mendle

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3
Q

what is inheritance

A

the passing of traits by heredity

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4
Q

in monastery’s garden, mendel noticed that in pea plants ___ specific traits could be seen

A

7

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5
Q

father of modern genetics

A

mendel

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5
Q

mendel developed _____ gentics

A

mendelian

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6
Q

mendel was an australian ____ in the mid 1800s

A

monk

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7
Q

mendel studied ___ and ___

A

math

science

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9
Q

how did mendel discover the basic principles of heredity

A

by breeding garden roses in carefully planned experiments

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9
Q

in monastery gardens, mendel was interested testing the ___ of the traits

A

predictability

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11
Q

step 2 in mendel’s experiments

A

cross-pollinate two P generation plants w/ contrasting traits

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12
Q

in mendels breeding experiments he crossed pea plants with ___ ___ with plants with white flowers

A

purple flowers

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13
Q

what are monohybrid crosses

A

cross involving only one pair of contrasting traits

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14
Q

how many steps are in mendel’s experiments

A

3

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15
Q

1st step in mendel’s experiments

A

produce TRUE BREEDING stains

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16
Q

what is the F2 generation

A

offspring of F1 self-pollination

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17
Q

in mendel’s results the missing trait reappeared in some of the

A

F2 generation

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18
Q

F1 generation are the

A

offspring of the ‘p generation’

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20
Q

3rd step in mendel’s experiments

A

F1 plants self-pollinate

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21
Q

if the first letter of the trait is a capital letter the trait is

A

dominant

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22
Q

if the first letter of the trait is lower case then the trait is

A

recessive

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23
Q

in each copy of a gene one is from each

A

parent

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24
Q

what plants are the ‘p generation’

what does ‘p generation’ stand for

A

plants in the 1st step

parental

25
in one of mendel's 4 hypotheses it states that there are alternative versions of genes called
alleles
26
what is a trait
characteristic determined by genes
27
genotype
genetic makeup of an organism
28
in mendel's results F1 showed
only one form of the trait
29
in one of mendel's 4 hypotheses it states that one factor of a trait is ___, and hides, the other factor is ____
dominant | recessive
30
phenotype
external appearance of an organism
31
one of mendel's hypotheses it states that the egg and sperm carry only one of the possible
alleles
32
law of independent assortment - dominant factors don't always go with other ___ - recessive factors don't always go with other ___
dominant factors | recessive factors
33
what is the law of segregation
the alleles for a trait will segregate when gametes are formed
34
probability that two or more independent events will occur together is the product of their individual probabilities
multiplication rule
35
one of mendel's 4 hypotheses stated that for each trait, an individual has __ copies of the gene
2
36
the ratio of mendel's results in the F2 generatio
3:1
36
what does it mean if a trait is homozygous
2 alleles r the same
37
ex. homozygous dominant- homozygous recessive-
PP | pp
38
what does it mean for a trait to be heterozygous
2 alleles are different
39
example of heterozygous trait
Pp
40
if a trait is heterozygous, it is also
hybrid
41
what is codominance
two dominant alleles are expressed at the same time
43
probability
likelihood that a specific event will occur
43
the laws of probability govern
Mendelian inheritance
44
probability=
number of one kind of outcome ------------------------------------------- total number of all possible outcomes
45
``` IA + IB = AB blood type roan cattle (white and red) are examples of.... ```
codominance
47
probability that any one of two or more exclusive events will occur is calculated by adding together their individual probabilities
addition rule
48
what are test crosses
testing the procedure used to determine the genotype of an individual
49
in the laws of probability the alleles of one gene ___ into gametes independently of another gene's alleles
segregate
50
ex of the laws of probability | outcome of one coin toss is ___ in next coin toss
irrelevant
51
the ___ and ___ rules applied to Monohybrid crosses
multiplication | addition
52
what does F1 stand for
first filial generation
52
probability in an F1 monohybrid cross can be determined using the
multiplication rule
52
the rule of addition can be used to figure out the probability that an F2 plant from a monohybrid cross will be ___ rather than ___
heterozygous | homozygous
54
mendel's laws of segregation and independent assortment reflect
the rules of probability
54
what is incomplete dominance
an individual displays a phenotype intermediate between the two parents
56
red snapdragon + white snapdragon = pink snapdragon straight hair + curly hair = wavy hair examples of....
incomplete dominance
57
in codominance the phenotype is
unique