Chapter 9
description
Transcript of Chapter 9
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Chapter 9
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Mendel Terms Monohybrid crosses
Dihybrid crosses
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Non-mendelian
traits
Misc
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Row 1, Col 1
What is dominant?
The presence of this type of allele
Will mask the presence of another
Type.
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1,2
The chemical factors that determine traits
What are genes?
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1,3
What is all tall?
What is the phenotype of the offspring?
T t
T
T TT
TT
Tt
Tt
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What is bbRR?
X
BR Br bR br
BR
Br
bR
br
Genotype in square X
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1,5
What is polygenic traits?
Variation in human skin color is a result of
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1,6
What is 100%?
If two snapdragons show incomplete dominance for flower color and a gardener crosses a red flower with a white flower, what percentage of the offspring would
be pink?
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2,1
When Gregor Mendel crossed true-breeding
tall plants with true breeding short plants,
all of the offspring were tall Because ____.
What the allele for tall is dominant?
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2,2
Organisms that have two identical alleles are ___
What is homozygous?
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What is TT and Tt?
T t
T
T TT
TT
Tt
Tt
The genotype(s) of the offspring
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What is White, rough hair?
X
BR Br bR br
BR
Br
bR
br
The phenotype of the offspring in square X
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A situation in which one alleleFor a gene is not completely
Dominant over another alleleFor that gene.
What is incomplete dominance?
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What is 40?
A body cell of a pigeon has 80 chromosomes. If a pigeon lays an
unfertilized egg, how many chromosomes will the egg have?
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3,1
Who concluded that traits areInherited by the passing of
Factors from one generation to the next?
Who is Gregor Mendel?
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3,2
How you get a hybrid
What is cross two true-breeding plants with different traits?
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3,3
When two heterozygous tall pea plants are crossed,
The expected genotype ratio of the Offspring is
What is 1:2:1?
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3,4
What is 1/16?
X
BR Br bR br
BR
Br
bR
br
The fraction of the offspring that will have white, smooth hair
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3,5
A cross of a red cow (RR)With a white bull (WW)
Produces all roan offspring (RW)This type of inheritance is called
What is codominance??
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What is dominant?
A plant breeder crossed two red roses, 78% of the offspring had red flowers and 22% had white
flowers. The allele for red flowers is most likely ___
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Gregor Mendel used pea plants to study ____
What is inheritance of traits?
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4,2
A cross between a chicken with spotted feathers and a
chicken with black feathers produced only chickens with
feathers that had an intermediate, blue-gray color.
What is this pattern of inheritance?
What is incomplete dominance?
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What is 50%
y y
Y
y
What percent of the offspring will have yellow seeds if Y is yellow?
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What is the phenotype ratio when you perform the
following dihybrid crossRrYy x RrYy
Where R: round; r: wrinkledY:Yellow; y: green
What is 9:3:3:1?
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The color of the offspring’s Flowers if you perform a Test cross between a pink
Snapdragon and a white one.
What is 50% white and 50% pink?
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What is 25%?
Both members of a couple are carriers of cystic fibrosis, a
recessive disease. What is the chance that they will have a child
with cystic fibrosis?
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When Mendel crossed a tall Plant with a short plant, what
Alleles did the offspring inherit from each parent
What is T from tall parent and t from short parent?
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The principle that states that during gamete formation genes for
Different traits separate withoutInfluencing each other’s
Inheritance.
What is the principle of independent assortment?
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5,3
A biologist observed several Different colors of fur in a Population of wild rabbits.
This process contributes to the Variation of fur color
What is meiosis or sexual reproduction?
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If pea plants that are homozygousFor round, yellow seeds (RRYY)
Were crossed with pea plants thatAre heterozygous (RrYy) what
Are the expected phenotypesOf the offspring?
What is all are round, yellow?
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If red and white flowers areCrossed to make pink, what is the
Genotype of the pink flowers?
What is RW?
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What is N?
The number of chromosomes in a gamete is represented by this
symbol.