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Genetics Practice 2
Test Description: Review for our genetics test!
Instructions: Answer all questions to get your test result.
1) The trait that is expressed when present; represented by a capital letter.
A
Dominant trait
B
Recessive Trait
2) A trait that is not expressed when the dominant trait is present. Appears to fade away.
A
Recessive Trait
B
Dominant Trait
3) Segments of DNA found in chromosomes that give instructions for producing a certain characteristic.
A
Characteristics
B
Genes
C
Traits
4) The different versions of a gene.
A
Traits
B
Phenotype
C
Alleles
D
Characteristics
5) Observable trait; what you physically see Ex: dimples
A
Phenotype
B
Genotype
6) Allele combinations; Ex: Dd or dd or DD
A
Genotype
B
Phenotype
7) Each allele influences the phenotype; a blending of traits
A
Partial dominance
B
Triple Dominance
C
Codominance
D
Incomplete Dominance
8) Both alleles contribute to the phenotype; both alleles are present; there is no blending
A
Triple Dominance
B
Incomplete Dominance
C
Partial dominance
D
Codominance
9) A graphic used to predict the possible genotypes of offspring in a given cross….
A
Punnett Square
B
Graph
C
Chart
D
Venn Diagram
10) A heterozygous male is crossed with a homozygous recessive female. What percent of the off-springs will show a recessive phenotype?
A
75%
B
100%
C
25%
D
50%
11) Which of the following represents phenotype?
A
Red hair
B
DNA
C
Heterozygous genes
D
Tt
12) Given the following: G = green, g = yellow. What is the genotype for a yellow plant?
A
gg
B
Gg
C
Yg
D
GG
13) Which trait is MOST likely to be inherited completely from parents?
A
Intelligence
B
Eye color
C
Hair Style
D
Weight
14) One child’s genotype is SS, the other is Ss. What is true about the children?
A
They have different genotype and same phenotype
B
They have different genotype and different phenotype
C
They have the same genotype, different phenotype
D
They have the same genotype and phenotype
15) True or False? Asexual reproduction requires 2 parents.
A
True
B
False
*select an answer for all questions
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