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Meiosis And Genetics
Test Description: General review of meiosis and genetics
Instructions: Answer all questions to get your test result.
1) Two chromosomes in a nucleus that carry genes for the same traits, but can specify different versions of the same traits, are called
A
homologous chromatids
B
homologous chromosomes
C
sister chromosomes
D
sister chromatids
2) A normal female has the genotype
A
XY
B
X
C
Y
D
XX
3) In a cell with a diploid number of 10 chromosomes, meiosis results in the formation of haploid daughter cells each with __ chromosomes.
A
5
B
20
C
10
D
40
4) ___ initiates the diploid stage of the human life cycle.
A
Mitosis
B
Meiosis
C
Fertilization
D
The specialization of cells
5) In humans the ___ determines the sex of the baby because ___.
A
female...either an X or Y gamete will fertilize the egg
B
female...an X chromosme will penetrate a female egg or a Y chromosome will penetrate a male egg
C
male...either an X chromosme will penetrate a female egg or a Y chromosome will penetrate a male egg
D
male...either an X or Y gamete will fertilize the egg
6) Different visible traits (blue eyes, straight hair, etc) is called
A
a karyotype.
B
a genotype.
C
a phenotype.
D
an allele.
7) The letters used to designalte the trait (ex: AA or Aa) is called a
A
karyotype.
B
phenotype.
C
punnett square.
D
genotype.
8) Different forms of the same trait (blond hair or brown hair) in homologous chromososmes is called
A
a genotype.
B
a phenotype.
C
an allele.
D
a karyotype.
9) The offspring of different varieties are referred to as
A
a hybrid.
B
the F1 generation.
C
the F 2 generation.
D
homozygous.
10) In a testcross, the organism with the unknown genotype is
A
crossed with a heterozygous individual.
B
crossed with the wild-type individual.
C
always crossed with anthor individual of unknown genotype.
D
always crossed with a homozygous recessive individual.
*select an answer for all questions
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