Heredity and Diversity

The diagram below shows the results of crossing a pea plant with round seeds and a pea plant with wrinkled seeds. What can be determined from the results of the experiment?

• Smooth shape and wrinkled shape are both recessive traits.
• Smooth shape and wrinkled shape are both dominant traits.
• Smooth shape is a dominant trait, and wrinkled shape is a recessive trait.
• Smooth shape is a recessive trait, and wrinkled shape is a dominant trait.

Which of these choices describes a set of instructions for an inherited trait, such as attached earlobes?

• a gene
• a phenotype
• a chromosome
• a characteristic

Which of these choices is the definition of allele?

• the form of a gene that is expressed
• one of the alternative forms of a gene
• the combination of genes for a specific trait
• the complete genetic makeup of a living thing

Every organism has a set of instructions that determines its traits. Which term describes the passing of genetic material from parent to offspring?

• gene
• heredity
• repetition
• generation

Tags

NGSS.MS-LS3-2

Examine the Punnett square below. Which of the following choices gives the alleles of the parents shown here?

• BB and BB
• BB and Bb
• Bb and Bb
• Bb and bb

Carrie is studying the genes of two fruit flies in her lab. She knows what alleles they have. She wants to know the potential combinations of alleles their offspring could inherit. Which of these choices would help Carrie identify the potential combinations?

• an allele
• a carrier
• a pedigree
• a Punnett square

Guiinea pigs have a gene that codes for black or brown fur . The allele for black fur (B) is dominant over the allele for brown fur (b).Which combination of parental genotypes could produce offspring with black fur as well as offspring with brown fur?

• BB x BB
• Bb x Bb
• BB x bb
• bb x bb

In fruit flies (the coloration of tan with black stripes (B) is dominant to a solid black body color (b). A biologist crosses a tan male with black stripes and a female with a solid black body color. Which stated observation can lead the biologist to the stated conclusion about the genotype of the male fruit fly in this cross?

• Observation : All the offspring are black. Conclusion: The male has two recessive alleles (bb).
• Observation : Half the offspring are black. Conclusion: The male has two dominant alleles (BB).
• Observation : All the offspring are tan with black stripes. Conclusion: The male has two dominant alleles (BB).
• Observation : Most of the offspring are tan with black stripes. Conclusion: The male has two dominant alleles (BB).

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Which of the following statements about pedigrees is true?

• Boxes typically represent males and circles typically represent females.
• Pedigrees can only be used to trace the occurrence of dominant traits.
• Shaded shapes typically represent people who do not have a specific trait.
• Pedigrees show all of the allele combinations that are possible in a cross.

The diagram shows a pedigree for a recessive inherited trait. If H represents the dominant allele and h represents the recessive allele, what are the genotypes of the parents shown in the pedigree?

• Hh and Hh
• hh and hh
• HH and HH
• Hh and HH

Tags

NGSS.HS-LS3-1