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Genetics Am I Ready Part 2
Test Description: Last part of the Am I ready worksheet: Karyotypes and vocabulary.
Instructions: Answer all questions to get your test result.
1) What gender is represented by the chromosomes XY?
A
male
B
none
C
both male and female
D
female
2) A picture of an organisms chromosomes is called
A
ultrasound
B
karyotype
C
monohybrid cross
D
dihybrid cross
3) What gender is represented by XX?
A
both male and female
B
male
C
no gender determined
D
female
4) Chromosomes 1-22 determine body characteristics and are called
A
karyotype
B
crossing over
C
sex chromosomes
D
autosomes
5) What is it called when only one chromosome from a pair is present. This usually results in organism death.
A
polysomy
B
homologous pairs
C
trisomy
D
monosomy
6) What is the name of chromosome pair 23 and it determines the gender of the organism
A
crossing over
B
karyotype
C
autosomes
D
sex chromosomes
7) What is it called when three chromosomes are present instead of a pair?
A
trisomy
B
polysomy
C
homologous pairs
D
monosomy
8) What genetic disorder is caused from trisomy on chromosome pair 21?
A
Klinefelder's syndrome
B
Turner's syndrome
C
no syndrome
D
Down's syndrome
9) The allele that is always expressed as the phenotype of an organism
A
dominant
B
multiple allele
C
trisomy
D
recessive
10) What is the name of a specific segment of DNA on a chromosome?
A
allele
B
crossing over
C
gene
D
double helix
11) The physical appearance of an organism is called the
A
homozygous
B
genotype
C
phenotype
D
heterozygous
12) What is it called when the tow alleles are the same in an organism
A
hybrid
B
hemizygous
C
heterozygous
D
homozygous
13) What is the name of the technique used to predict outcomes of a cross with only 1 trait?
A
karyotype
B
dihybrid cross
C
ultrasound
D
monohybrid cross or punnett square
14) What is the name of the allele that may be covered up even when it is present?
A
recessive
B
dominant
C
crossing over
D
hybrid
15) When the alleles of an organism are written as letters it is called the
A
genotype
B
homozygous
C
phenotype
D
heterozygous
16) When the alleles in an organism are different the organism is said to be
A
genotype
B
homozygous
C
heterozygous
D
phenotype
17) What is the name of the technique used to predict the outcome of a cross with 2 different traits
A
ultrasound
B
monohybrid cross/ punnett square
C
dihybrid cross
D
karyotype
18) What is the name of the allele that can cover other alleles
A
homozygous
B
heterozygous
C
dominant
D
recessive
19) What is the name for variations of a gene. Examples are blue eye color, brown eye color, green eye color.
A
chromosome
B
allele
C
gene
D
double helix
20) What is represented by the following chromosomes? III
A
trisomy
B
homologous pairs
C
crossing over
D
monosomy
*select an answer for all questions
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