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Unit 6 Genetics Review
Unit 6 Genetics Review
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Unit 6 Genetics Review
Flashcards
30 cards
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Practice quiz
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Questions
30
Answers
1
What type of inheritance pattern is shown?
sex-linked recessive
autosomal dominant
sex-linked dominant
autosomal recessive
2
What is the relationship between person I-1 and III-1?
cousins
uncle and neice
grandparent and grandchild
siblings
3
Which of the following is an alternate form of a gene that may occur at a specific locus?
phenotype
dominant
allele
recessive
4
Pea color, pod shape, flower color, and pea texture are all examples of
variations
mutations
phenotypes
genotypes
5
The concept that each parent only donates one copy of each chromosome is known as
Law of Thermodynamics
Law of Supply and Demand
Law of Independent Assortment
Law of Segregation
6
In a pedigree, what do the Roman numerals indicate?
individuals
relationships
they group people by phenotype
generations
7
The phenotypic results shown in this Punnett square are the results of
codominance
random luck
complete dominance
incomplete dominance
8
Two different alleles at a specific locus are called:
somatic
gametogenic
heterozygous
homozygous
9
What type of inheritance pattern is shown in this pedigree?
autosomal recessive
autosomal dominant
sex-linked
incomplete dominance
10
Which of the following is NOT a source of genetic variation?
mitosis
mutations
sexual reproduction
randomness of fertilization
11
Chromosomes with genes for characteristics NOT related to the sex of an organism are called
homologous chromosomes
diploid
autosomes
sex chromosomes
12
Two chromosomes that have the same length, general appearance and copies of the same genes are
homologous
gametes
analogous
autosomes
13
What term describes a line of organisms that has become genetically uniform (Mendel's term)?
wild type
cross
pure
hybrid
14
The allele that is only expressed when two copies are present is
dominant
somatic
recessive
autosomal
15
In this pedigree, what does the letter "P" stand for?
Punnett square
probability
parent generation
pigeon
16
Uppercase letters are used to represent dominant alleles.
True
False
17
Who is considered the father of genetics?
Frederick Griffith
Gregor Mendel
Charles Darwin
Reginald Punnett
18
Consider this Punnett Square. What percentage of the female population are carriers?
100%
50%
75%
25%
19
What is the genotypic ratio in this Punnett square?
BB 1: Bb 2: bb 1
BB 0: Bb 2: bb 2
BB 0: Bb 4: bb 0
BB 2: Bb 2: bb 0
20
A person who inherits one recessive allele but does not express the trait is
homozygous dominant
homozygous recessive
very rare
a carrier
21
What do the letters indicated represent?
offspring
one gamete from mom, one gamete from dad
phenotypes of the parents
parent gametes
22
The figure shown here is called a(n)
karyotype
phenotype
haplotype
genotype
23
Traits such as human blood types are the result of
complete dominance
environmental influences
codominance
crossing over
24
Eye color in humans is a __________ trait.
Mendelian
polygenic
codominant
sex-linked
25
How many traits are being traced in this dihybrid Punnett square?
4
3
1
2
26
The study of biological inheritance patterns and variation in organisms is known as
genetics
biology
ecology
physiology
27
This karyotype shows a
female
male
28
Which of the following is NOT one of Mendel's three key choices?
use of purebred plants
observation of either/or traits
living in a monastery
control over breeding
29
A Mendelian trait is one whose phenotypes
are created by more than one gene
have a range of choices
are the result of mutations
are either/or
30
Which cell types contain information that is passed on (inherited by) offspring?
pancreas cells
skin cells
plant leaf cells
sex cells
