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Biology Game Heredity G9
Test Description: Biology
Instructions: Answer all questions to get your test result.
1) A gene is:
A
A portion of a chromosome
B
The whole chromosome
C
All choices are correct
D
Present outside the nucleus
2) Self cross is a cross between :
A
F1 cross birecessive
B
None of the choices is correct
C
Made to determine the unknown genotype of the dominant allele.
D
F1 cross F1
3) A cross between white flower(pure) and red flower(pure) gives 100% pink flowers (F1) :
A
White allele dominates the black
B
Black allele dominates the white one
C
This is the case of Incomplete dominance
D
This is the case of Complete dominancy
4) In case of Incomplete dominance:
A
The dominant allele masks the recessive one
B
An intermediate phenotype may appear in F1 .
C
Both alleles are recessive.
D
The recessive allele masks the dominant one
5) A cross between yellow flower (pure) and blue flower (pure) gives 100% F1 (flowers of violet color):
A
All choices are correct
B
B: is the symbol of blue flower allele
C
Y: is the symbol of white flower allele
D
This is the case of incomplete dominance
6) A cross between a white mouse (pure) with a black mouse gives 100%grey mouses. The symbols that may be used are:
A
W: white B:black
B
w: white B: black
C
W : white b: black
D
Non of the choices
7) Hybrid genotype (meaning/examples):
A
AB
B
All choices are correct
C
Heterozygous
D
BR
8) A cross between pure red flower and a pink(RW) flower gives: (Incomplete dominance case)
A
50 % red and 50% pink
B
50% red and 50% white
C
Non of the choices is correct
D
100% pure red
9) A cross between two pink flowers (RW) gives: ( Incomplete dominance case)
A
100% white flowers
B
50% white and 50% red flowers
C
100% red flowers
D
50% pink flowers, 25% red flowers , 25% white flowers
10) A cross between two white flowers (pure) gives:
A
Non of the choices is correct
B
100% F1 with hybrid genotype
C
50% pure and 50% hybrid F1
D
100 F1% of pure genotype
*select an answer for all questions
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