Biology Second Semester Final Review

Which of the following is an example of a homozygous dominant genotype?

• BB
• Bb
• bB
• bb

A change in DNA is called a __________________.

• Nucleotide
• Mutation
• Radiation
• Transcription

Tags

NGSS.HS-LS3-2

If a homozygous dominant (AA) individual is crossed to a homozygous recessive (aa) individual, what will the genotypes be of the offspring?

• 50% AA, 50% aa
• 25% AA, 50% Aa, 25% aa
• 100% Aa
• 50% AA, 50% Aa

Tags

NGSS.HS-LS3-1

The human body has 23 homologous pairs of chromosomes.  How many chromosomes does a somatic cell have?

• 12
• 23
• 46
• 92

What is meant by the term "genetic variation?"

• Some individuals have the same genes as others
• Some genes are multiplied in tetraploid organisms
• Some chromosomes are longer than others
• Some individuals have different genes than others

Tags

NGSS.HS-LS3-2

NGSS.HS-LS4-2

Which of the following would be the RNA strand transcribed from the following DNA strand: ATTGGCTAG?

• UAAGGTTCA
• TTAGCCTTT
• UAACCGAUC
• TTAUUCCTU

In animals, sexual reproduction depends on the production of gametes. Which of the following processes produces gametes in animals? 

• Meiosis
• Binary fission
• Mitosis
• Fragmentation 

A DNA strand contains codons, which consist of a sequence of 3 nucleotides. Which BEST describes the importance of codons found in the sequence of DNA?

• They contain the code for mRNA
• They signal the start of mitotic cell division
• They ensure proper replication of the genetic code
• They are used to assemble amino acids for protein synthesis

Tags

NGSS.HS-LS1-1

What happens in mitosis?

• cell divides
• DNA replicates
• cell multiplies
• cell grows

Tags

NGSS.HS-LS1-4

What type of cells undergo mitosis?

• Sex Cells
• Gametes
• Egg cells
• Somatic Cells

Tags

NGSS.HS-LS1-4