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Worksheetsprinciples of inheritance & variation- Quiz 11
Total questions: 11
Worksheet time: 5mins
A sex-linked allele NEVER passes from a
man to his sons
woman to her daughters
man to his grandsons
woman to her granddaughters
A mutation is a
sudden temporary change in an organism’s genetic material.
change in phenotype followed by a change in genotype.
change in hereditary material directed by a changing environment.
change in genotype which may result in a new expression of a characteristic.
Klinefelter’s syndrome results from the fusion of
an X egg and a YY sperm.
an XY egg and an X sperm.
an XX egg and a Y sperm.
an XX egg and a YY sperm.
wo linked genes a and b show 20% recombination. The individuals of a hybrid cross between ++/++ x ab/ab shall show gametes:
++ 5.0 : ab 50
++ 80 : ab 20
++ 40 : ab 40 : + a 10 : + b 10
++30 : ab 30 : + a 20 : + b 20
A pea plant that is heterozygous for the flower gene makes gametes. What is the probability that one of its gametes contains the recessive white allele for flower color?
0%
25%
50%
75%
Mendel’s primary contribution to our understanding of genetic inheritance was
the idea that genes are found on chromosomes.
providing a mechanism that explains patterns of inheritance.
describing how genes are influenced by the environment.
determining that the information contained in DNA codes for proteins.
Being able to use a Punnett square to track the pattern of inheritance in a two-characteristic cross (e.g., pea seed color and seed shape) demonstrates Mendel’s idea of
allele segregation.
blending inheritance.
environmental influences on genes.
independent assortment.
The linkage map of X-chromosome of fruitfly has 66 units, with yellow body gene (Y) at one end and bobbed hair (b) gene at the other end. The recombination frequency of these two genes (Y and b) should be :
66%
> 50%
< 50%
100%
Mendelian genetics applies on
Haploid
Diploid
Prokaryotes
Mycoplasma
The incorrect statement with regard to Haemophilia is
It is a recessive disease
It is a dominant disease
A single protein involved in the clotting of blood is affected
It is a sex - linked disease
Distance between the genes and percentage of recombination show
A direct relationship
An inverse relationship
A parallel relationship
No relationship
