Heredity: Question Preview (ID: 20723)


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In Mendelian genetics the genotypic ratio of a monohybrid cross is always
a) 4:0 b) 1:2:1 c) 3:1 d) not always know
In Mendelian genetics the phenotypic ratio of a monohybrid cross is always
a) 4:0 b) 1:2:1 c) 3:1 d) not always known
An allele that is expressed only when two copies of it are present is said to be
a) recessive b) dominant c) hybrid d) heterozygous
The allele that is expressed when two different alleles are present is said to be
a) recessive b) dominant c) hybrid d) homozygous
The genetic makeup which represents the genes (TT, Tt, and tt) is called the
a) phenotype b) genotype c) heredity d) inheritance
Organisms that have two different alleles for a particular trait are said to be
a) heterozygous b) homozygous c) dominant d) recessive
The physical characteristics of an organism are called its
a) genetics b) heredity c) phenotype d) genotype
A Punnett square is used to determine the
a) probable outcome of a cross b) actual outcome of a cross c) result of incomplete dominance d) result of meiosis
Organisms that have two identical alleles for a particular trait are said to be
a) hybrid b) heterozygous c) homozygous d) dominant
Different forms of a gene are called
a) hybrids b) dominant factors c) alleles d) recessive factors
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