Chapter 11: Introduction to Genetics Test

Different forms of a gene are called

• hybrids

• dominant factors

• alleles

• recessive factors

Organisms that have two identical alleles for a particular trait are said to be

• hybrid

• heterozygous

• homozygous

• dominant

A Punnett square is used to determine the

• probable outcome of a cross

• actual outcome of a cross

• result of incomplete dominance

• result of meiosis

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The physical characteristics of an organism are called its

• genetics

• heredity

• phenotype

• genotype

The probability of flipping a coin twice and getting two heads is

• 1

• 1/2

• 1/4

• 3/4

A situation in which a gene has more than two alleles is known as

• complete dominance

• codominance

• polygenic dominance

• multiple alleles

A pink-flowered Mirabilis plant (RW) is crossed with a white-flowered Mirabilis plant (WW). What is the chance that a seed from this cross will produce a red-flowered plant?

• 0

• 1/4

• 1/2

• 1

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Unlike mitosis, meiosis in male mammals results in the formation of

• one haploid gamete

• three diploid gametes

• four diploid gametes

• four haploid gametes

If the Diploid number of Carrots is 18, the haploid number is

• 18
• 9
• 27
• 36

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The chromosomes that pair up during meiosis, are called __________ chromosomes.  

• homozygous 
• asexual
• homologous
• genes

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