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Biology Chapter 12 Review
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True or False: Meiosis produces genetically identical daughter cells
 
False
 
True
Human blood type is controlled by which complex pattern of inheritance?
 
multiple alleles
 
incomplete dominance
 
polygenic inhertiance
An instance where a blending of phenotypes occurs in the heterozygous individual is known as ________________.
 
incomplete dominance
 
codominance
 
polygenic inheritance
 
multiple alleles
Spotted coat color would be an example of a trait that follows which complex pattern of inheritance?
 
codominance
 
incomplete dominance
 
polygenic inhertiance
 
multiple alleles
Sex Cells; e.g. sperm & egg.
gametes
The allele combination an organism contains.
genotype
Half of the set of the chromosomes.
haploid
The physical expression of a trait.
phenotype
Instance where the alleles for a trait are different.
heterozygous
Instance where the alleles for a trait are the same.
homozygous
A fertilized cell; i.e. the union of sperm and egg.
zygote
Chromosomes where genes are arranged in the same order.
homologous chromosomes
Specific characteristics that are inherited.
traits
The division of sex cells; produces haploid gametes.
meiosis
The exchange of genetic material that occurs in prophase I.
crossing over
Alternate form of a gene; represented by letters.
alleles
In a dihybrid cross, how many traits are being crossed?
 
2
 
1
 
3
 
4
In a monohybrid cross, how many traits are being crossed?
 
1
 
2
 
3
 
4
If you would cross a homozygous dominant individual with a heterozygous individual, what would be the phenotypic ratio of the possible offspring?
 
100% would show the dominant trait
 
100% would show the recessive trait
 
50% would show dominant, 50% would show recessive
 
25% would show dominant, 75% would show recessive
Which of the following phenotypes would be expressed given the genotype tt?
 
the recessive phenotype
 
the dominant phenotype
 
the heterozygous phenotype
Which of the following genotypes would exhibit the dominant phenotype?
 
both GG and Gg
 
GG
 
Gg
 
gg
Which of the following is NOT a reason why Mendel chose to study pea plants?
 
He could easily remove the female parts of the plant
 
He could use pollen from another type of pea plant
 
he could control the traits that he wanted to use
 
all of these
Which of the following is an example of a gamete?
 
sperm cell
 
liver cell
 
brain cell
 
none of these
Mitosis is the division of ______________ and Meiosis is the division of _______________.
 
all of these
 
somatic cells, gametes
 
body cells, sex cells
 
diploid cells, haploid cells
Body cells are considered to be
 
diploid
 
haploid
 
polyploid
 
none of these
During which phase of meiosis does the crossing over of homologous chromosomes take place?
 
prophase I
 
anaphase I
 
metaphase I
 
telophase I
Which of the following genotypes would represent a homozygous recessive individual?
 
gg
 
GG
 
Gg
 
gG
Which of the following best describes the definition of a gene?
 
location on a chromosome that codes for a specific trait
 
an alternate form of a trait
 
a characteristic
 
none of these
All gametes are considered to be _______________.
 
haploid
 
diploid
 
polyploid
 
all of these
Cells produced after meiosis is complete are considered to be ___________.
 
haploid
 
diploid
 
polyploid
 
zygotes
A(n) ___________ is an offspring of parents that have different forms of a trait.
 
hybrid
 
mutant
 
allele
 
all of these
Which phase of Meiosis impacts genetic variation the most?
 
Prophase I
 
Metaphase I
 
Telophase I
 
none of these
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