Heredity Lesson

Open Ended

Why do organisms have two alleles for every trait?

Multiple Choice

Which of the following best describes the role of DNA in heredity?

• DNA provides instructions for making proteins that determine traits.

• DNA is only found in chromosomes and has no role in traits.

• DNA is the same in all organisms and does not affect traits.

• DNA is a small molecule that does not carry genetic information.

Multiple Choice

Which of the following best describes a heterozygous genotype?

• A genotype with two dominant alleles (BB)

• A genotype with two recessive alleles (bb)

• A genotype with one dominant and one recessive allele (Bb)

• A genotype with no alleles

Open Ended

Is it possible for someone to have blue eyes while their parents both have brown eyes? Explain why or why not.

Multiple Choice

Which of the following statements about genotype and phenotype is correct?

• Genotype refers to observable traits, while phenotype refers to genetic makeup.

• Genotype refers to the genetic makeup, while phenotype refers to observable traits.

• Both genotype and phenotype refer to observable traits.

• Both genotype and phenotype refer to genetic makeup.

Multiple Choice

Which of the following is an example of a phenotype?

• BB

• Bb

• Brown eyes

• bb

Multiple Choice

What is the main difference between sexual and asexual reproduction in terms of genetic variation?

• Sexual reproduction produces identical offspring.

• Asexual reproduction increases genetic variation.

• Sexual reproduction increases genetic variation.

• Asexual reproduction requires two parents.

Open Ended

Compare and contrast the processes of sexual and asexual reproduction, focusing on the type of cell division involved and the genetic outcome for the offspring.

Open Ended

Explain how genetic information is passed from parent to offspring in sexual reproduction.

Multiple Select

Which of the following statements are true about offspring produced by sexual reproduction?

• They are genetically identical to one parent.

• They have a combination of genes from both parents.

• They are clones of both parents.

• They have a unique set of genes.

Multiple Choice

Which type of cellular division is related to sexual reproduction?

• Mitosis

• Meiosis

• Binary fission

• Budding

Multiple Choice

Which process results in the formation of gametes with a different set of DNA from the parent(s)?

• Mitosis

• Meiosis

• Both

• Neither

Multiple Select

Which of the following statements about dominant and recessive alleles are correct?

• Dominant alleles are always expressed when present.

• Recessive alleles can only be seen when both alleles are recessive.

• Heterozygous genotype shows only the recessive trait.

• Homozygous dominant genotype has two dominant alleles.

Open Ended

Explain how hereditary information is passed from one generation to another and how this relates to the traits observed in offspring.

Multiple Choice

To determine the gender of your alien, you flip the coin for the male parent. What does heads represent?

• X chromosome (female)

• Y chromosome (male)

• Dominant trait

• Recessive trait

Open Ended

Describe the steps involved in determining the genotype and phenotype of an alien offspring using the coin flip method.

Multiple Choice

Which of the following best describes the relationship between chromosomes, DNA, genes, and alleles?

• Chromosomes are made of DNA, which contains genes, and alleles are different forms of those genes.

• DNA is made of chromosomes, which contain alleles, and genes are different forms of chromosomes.

• Genes are made of alleles, which contain chromosomes, and DNA is a form of gene.

• Alleles are made of DNA, which contains chromosomes, and genes are different forms of alleles.