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In human males, all the chromosomes are paired perfectly except one. These unpaired chromosome are
Chromosomes 1 and 22
Chromosomes 3 and 21
Chromosomes X and Y
None of the above
The theory of evolution by natural selection was given by
Gregor Mendel
JBS Haldane
Charles Darwin
________ is the genetic makeup of an individual while ________ is the observable appearance of an organism.
Phenotype, genotype
Genotype, phenotype
Genome, phenome
Gregor Mendel was:
an English scientist who carried out research with Charles Darwin
an Austrian monk who carried out research on his own
an early 20th century Dutch biologist who carried out research with JBS Haldane
Mendel believed that the characteristics of pea plants are determined by the:
inheritance of units or factors from both parent
inheritance of units or factors from one parent
relative health of the parent plants at the time of pollination
none of the above
An allele is
another word for gene
a homozygous genotype
a heterozygous genotype
one of several possible forms of a gene
When the genotype consists of a dominant and a recessive allele, the phenotype will be like _________________ allele.
dominant
recessive
either dominant or recessive
a mixture of both
Mendel's experimental material was
Sweet potato
Red beetles
Garden Pea
Green beetles
During his experiments, Mendel called 'genes' as
traits
factors
characters
qualities
Speciation is the result of
Genetic drift
Natural selection
Geographical isolation
All of the above
