Heredity/complete Dominance 8 And 9 Question Preview (ID: 51254)


This Game Aims To Review Different Important Definitions Used In The Heedity Course For Grade 9 Students. TEACHERS: click here for quick copy question ID numbers.

A man and his wife of blood group (o) may give a child having
a) Blood group A
b) Blood group B
c) Blood group (o) only
d) Non of the choices is correct

The genes :
a) Are arranged in a linear manner on chromosomes
b) May carry identical genetic information
c) May carry different genetic information
d) All choices are correct

The recessive trait maybe expressed as:
a) Pure only
b) Pure or hybrid
c) Hybrid only
d) None of the choices

Pure genotype (meaning/examples):
a) Homozygous
b) AA
c) BB
d) All choices are correct

A cross between pure red flower (dominant) and white (recessive) gives:
a) 100% hybrid red
b) 100% pure red
c) 50% red and 50% white
d) Non of the choices is correct

Anas is a boy of blood group A, his possible genotype(s) is (are):
a) AA or Ab
b) AA only
c) Ao only
d) Ao only

In the case of complete dominancy:
a) There is a dominant trait and a recessive trait
b) The dominant trait may expressed as pure or hybrid
c) The dominant trait mask the recessive one
d) All choices are correct

Hybrid ( means /examples) :
a) Ao
b) Heterozygous
c) Different alleles of the same gene
d) All choices are correct

The phenotype is
a) All the visible characteristics
b) All the genes
c) All recessive genes
d) All dominant genes

The genotype is:
a) An allele
b) All the visible characteristics
c) All the genes
d) All the dominant alleles

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