Bio 189 Final Review

Which of the following is an example of a human polygenic trait?

• ABO blood groups

• Sickle Cell Anemia

• Skin color

• Colorblindness

Tags

NGSS.HS-LS3-3

In pedigree chart, which of the following symbols represents a female who has the trait/disease?

• Shaded square

• Shaded circle

• Unshaded semi-circle

• Clear square

What best describes the process of gene expression in eukaryotic cells?

• 1) DNA replication, 2) RNA splicing and modification, 3) Transcription

• 1) Translation, 2) Transcription, 3) DNA replication

• 1) Transcription, 2) DNA replication, 3) Translation

• 1) Transcription, 2) RNA splicing and modification, 3) Translation

After meiosis occurs, how many chromosomes will the daughter cells have compared to their parent cells?

• Double the number of chromosomes.

• Half the number of chromosomes. .

• The same number of chromosomes

• One quarter the number of chromosomes.

Which of the following does not occur during interphase?

• Sister chromatids separate

• Cell size doubles

• Organelles are duplicated

• DNA replication

Which of the following events may occur in Prophase I but not during Prophase II?

• The cell doubles its cytoplasmic contents

• The chromosomes swap segments of DNA (crossing over)

• The nuclear envelope disassembles

• The chromosomes coil up tightly

Trisomy 21 (Down Syndrome) is due to which type of genetic disorder?

• Nondisjunction

• Autosomal dominant disorder

• X-linked recessive disorder

• Autosomal recessive disorder

Tags

NGSS.HS-LS3-2

HeLa cells were extracted from a patient. What type of cells are HeLa cells?

• Viral Cells

• Protein cells

• Stem cells

• Cancer cells

What is the primary structural difference between DNA and RNA?

• DNA is single-stranded whereas RNA is double-stranded.

• DNA contains ribose sugar while RNA contains deoxyribose sugar.

• RNA uses uracil (U) as a base instead of thymine (T) found in DNA.

• The presence of adenine (A) and cytosine (C) bases in DNA but not in RNA.

At the end of Meiosis I, there was found to be an unequal number of chromosomes in each of the resulting cells.  What causes this abnormality?

• Law of Segregation

• Nondisjunction

• Independent Assortment

• Crossing Over