Punnett Square Practice

Which term correctly describes an individual with a pair of the same alleles for a trait? 

• homologous
• heterozygous
• homozygous
• heterologus

 When the genotype consists of a dominant and a recessive allele, the phenotype will be like the ______________ allele.

• dominant
• recessive
• both
• neither

 Phenotype refers to the _________ of an individual

• genetic makeup
• physical appearance
• recessive alleles
• dominant alleles

 A pea plant is heterozygous for height (Tt) and it is crossed with a homozygous short (tt) plant. Use a Punnett square to determine the probability of one of their offspring being short.

• 100%
• 75%%
• 50%
• 25%

Tags

NGSS.HS-LS3-1

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 Which of these would best be described as a phenotype?

• blue eyes
• mutation
• Bb
• Tt

 Which of these would best be described as a phenotype?

• blue eyes
• mutation
• Bb
• Tt

Tags

NGSS.MS-LS3-1

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 Heredity information for traits is located in _____________.

• chromosomes on genes
• genes of chromosomes
• lysosomes in cytoplasm
• the mitichondria

Tags

NGSS.HS-LS1-1

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 Look at the Punnett square. If the two parents represented in the Punnett square have four offspring, what does the Punnett square tells you?

• two of the offspring will definitely be heterozygous.  
• one of the offspring will definitely show the recessive trait.
• there is a 50% chance for each of the 4 offspring to have the genotype Rr.
• there is a greater chance for the offspring to be RR than rr.

Tags

NGSS.HS-LS3-1

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Aa, DD, bB, yy are all examples of

• genotypes
• phenotypes

What is the purpose of pedigrees?

• To track traits in a family

• To make determinations about offspring

• To observe a family tree

• Pedigrees are not particularly usefule

Tags

NGSS.HS-LS3-1