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WorksheetsChapter 26 Quiz 2
Total questions: 10
Worksheet time: 5mins
The chance of having a boy or a girl with each birth is 50%.
True
False
X-linked recessive disorders are more common in females.
True
False
Most human characteristics are controlled by a single gene.
Ture
False
Identical twins share all their traits because they have the same genetic makeup.
True
False
The pedigree shows the inheritance of a certain trait in a family. The trait is controlled by a pair of alleles located on an autosome.
Which cross(es) can be used to deduce which phenotype is dominant?
Cross X only
Cross Z only
Crosses X and Y only
Crosses X and Z only
The pedigree shows the inheritance of a certain trait in a family. The trait is controlled by a pair of alleles located on an autosome.
What are the probable genotypes of individual 1?
Homozygous
Heterozygous
Homozygous or heterozygous
The pedigree shows the inheritance of a certain trait in a family. The trait is controlled by a pair of alleles located on an autosome.
What are the probable genotypes of individual 2?
Homozygous
Heterozygous
Homozygous or heterozygous
Discontinuous variation has (a)______________ phenotypes. The data can be represented in a (b)______________.
(a) intermediate, (b) line curve
(a) intermediate, (b) bar chart
(a) no intermediate, (b) line curve
(a) no intermediate, (b) bar chart
Continuous variation has (c)______________ phenotypes. The data can be represented in a (d)______________.
(c) intermediate, (d) line curve
(c) intermediate, (d) bar chart
(c) no intermediate, (d) line curve
(c) no intermediate, (d) bar chart
Characteristics showing discontinuous variation are usually controlled by (e)______________ genes, while those showing continuous variation are usually controlled by (f)______________ genes.
(e) one or a few, (f) many
(e) many, (f) one or a few
