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IB Biology Exam (Genetics) Flashcards | StudBud
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IB Biology Exam (Genetics)
IB Biology Exam (Genetics)
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A review of genetics
Flashcards
23 cards
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Practice quiz
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Questions
23
Answers
1
The pedigree most likely shows what type of pattern of inheritance?
Autosomal recessive
Autosomal dominant
Y-linked dominant
X-linked recessive
2
The karyotype shows what kind of individual?
Healthy male
Healthy female
Female with Down's
Male with Down's
3
What phenomenon occurs to cause Down's Syndrome?
Crossing over
Nondisjunction
Disjunction
Epistasis
4
The pedigree most likely shows what type of pattern of inheritance?
Y-linked recessive
X-linked recessive
Autosomal dominant
Autosomal recessive
5
A pea plant has a genotype AaBb. If it self-fertilizes, what will be the phenotypic ratio?
1:2:2:1
3:1
9:3:3:1
1:2:4:9
6
Which parents could have a baby with type AB blood?
B and O
AB and O
A and A
A and AB
7
Why does Naks never come early to school?
He runs an underground spelling bee competition ring
Always groggy from a late night working at the strip club
He has to battle a dragon every day in order to use his car
His cat dies every morning, only to be reborn at night
8
Which is an exception to the rule of independent assortment?
Polygenic inheritance
Epistasis
Down's syndrome
Unlinked genes
9
If both parents have a lethal dominant allele, what is the probability their child does not?
100%
0%
25%
50%
10
The pedigree most likely shows what type of pattern of inheritance?
X-linked dominant
Autosomal recessive
X-linked recessive
Autosomal dominant
11
If parents show a dominant trait but their child shows a recessive trait, which must be true?
Both parents are heterozygous
Both parents are homozygous
One parent is heterozygous and the other is homozygous
He's not the father
12
Which is an example of a polygenic trait?
Hereditary breast-ovarian cancer syndrome
Eye color
Blood type
Albinism
13
If genes segregate independently then they are...
Epistatic
Unlinked
Mutations
Divergent
14
In a trihybrid cross, how many total boxes will appear in the Punnet square?
16
25
36
64
15
Genes are said to be linked if...
Their loci are on the same chromosome
They occur from a mutation
They do not frequently appear together
They are the same length
16
Continuous variation of polygenic traits can be expressed on a...
Logistics curve
Bimodal distribution curve
Exponential curve
Bell curve
17
The pedigree most likely shows what type of pattern of inheritance?
X-linked dominant
Autosomal recessive
Autosomal dominant
X-linked recessive
18
The karyotype shows what type of person?
Male with Down's
Healthy female
Healthy male
Female with Down's
19
Down's Syndrome is caused as a result of...
Polyploidy after meiosis 2
An error during meiosis 1
An error during meiosis 2
Vaccines
20
Which parents could have a baby with type O blood?
Heterozygous A and Heterozygous B
Heterozygous AB and Heterozygous B
Homozygous A and Heterozygous A
Homozygous O and Heterozygous AB
21
How many possible blood type genotypes are there in humans?
8
4
5
6
22
The mom has hemophilia, but the dad does not. What is the chance that their child will have it?
25%
50%
100%
0%
23
What is the name for a single an alternative form of a single gene passed to offspring?
Phenotype
Allele
Zygote
Inheritance
