biology final review S2

Which is NOT true of MEIOSIS?

• Produces two cells
• Allows for genetic recombination
• Produces gametes
• Includes crossing over

Which of the following is true of NUCLEIC ACIDS?

• Examples include enzymes and hormones
• Function is transmitting information
• Monomer is amino acid
• Used for long-term energy storage

Transcribe this sequence:  ACTGTTC

• UGACAAG
• TGACAAG
• TGUCUUG
• AGUCUUG

SPEED QUESTION!!  Scientists estimate that the earth is how old?

• 4.6 billion years
• 3.5 billion years
• 4.6 million years
• 3.5 million years

In a cross of two heterozygous parents, what proportion of the offspring will also be heterozygous?

• 50%
• 100%
• 0%
• 75%

When Mendel crossed two green pea plants, some of the offspring produced yellow peas.  What does this tell us about the parent plants?

• They must have been homozygous dominant
• They must have been heterozygous
• They must have been homozygous recessive
• One was dominant and one was recessive

What do you call a change in an organism's DNA?

• Replication
• Mutation
• Codon
• Phenotype

Vestigial structures show

• how an ancestor may have lived

• how old a fossil is

• what the organism is not related to

• usefulness in the organism that has it

The diagram shows homologous chromosomes during prophase I of meiosis. Which of the following correctly describes the process being illustrated?

• Segregation of sister chromatids

• Mutation in which the DNA content of the gene is altered

• Crossing over in which alleles are exchanged

• Condensation and segregation of alleles

Which is the correct phenotype for this organism?

• BB
• blue
• green
• bb