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Sci8-Ch 22 Heredity & How traits change Flashcards | StudBud
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Sci8-Ch 22 Heredity & How traits change
Sci8-Ch 22 Heredity & How traits change
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Genetics/Punnett Squares/ Pedigree Charts #8thgradescience
Flashcards
27 cards
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Practice quiz
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Questions
27
Answers
1
According to this pedigree chart, blue eyes are ______________________.
codominant
Incomplete dominant
Dominant
Recessive
2
Mendel came up with his Three Laws of Inheritance by observing __________________.
Tomatoes
Pea Plants
Corn Stalks
Roses
3
Pp is an example of a ________________.
Homozygous recessive genotype
none of the answers are correct
Heterozygous genotype
homozygous domimant genotype
4
Tom and Jen are heterozygous with brown eyes, their baby has blue eyes. Tom and Jen are _____.
Happy their baby is healthy
sad because they wanted a boy
Carriers of the recessive blue allele
A great couple
5
Blue eyes are an example of a _________________.
heterozygous
homozygous
genotype
phenotype
6
If a person's genotype is XY, then the person is
female
male
7
Based on the Punnett square, what is the probability that they will have a kid with blue eyes?
100%
25%
50%
0%
8
A phenotype is the information contained within a gene.
True
False
9
What does a darkened square or circle represent on a pedigree chart?
The trait that is not expressed
2nd generation
Woman
The expressed trait
10
We represent dominant alleles with a ________________ letter.
lowercase
capital
circle
triangle
11
A trait that is expressed in every generation is most likely _________________.
recessive
dominant
invisible
big
12
What percent of alleles does each parent contribute to their offspring?
33%
50%
100%
25%
13
A carrier must be ___________________.
dominant
homozygous
heterozygous
recessive
14
Which genotype is homozygous recessive?
Rr
RT
rr
RR
15
We represent recessive alleles with a _________________ letter.
lowercase
capital
lines
the letter r
16
A red plant crossed with a white plant have offspring that are pink. This is an example of___.
complete dominance
Incomplete dominance
codominance
a miracle
17
In biology, pedigree charts are like a _______________________.
bonsai tree
natural selection
flower
family tree
18
Mutations are changes in an organism's _____________________ .
Food source
behavior
adaptation
DNA
19
If the genotype of a person is XX, then the person is
female
male
20
What is the purpose of DNA?
To take up space
To pass on heredity information
To move around the body
To make a ladder
21
Who is considered the father of genetics?
Wallace
Mendel
Darwin
Garcia
22
A brown dog is crossed with a white dog. Their offspring are tan. This is an example of _______
Codominance
Incomplete dominance
Incomplete codominance
Complete dominance
23
Which genotype is missing from the Punnett Square below?
Bb
BB
bb
None of these answers are correct
24
Which genotype is heterozygous?
tt
TR
TT
Tt
25
A zebra's stripes are it's ___________________.
best quality
phenotypes
way to survive
genotype
26
What is the genotype for an individual who is heterozygous with brown hair?
bB
Bb
bb
BB
27
A genotype is a physical trait.
True
False
