Reporting Category 2

Reporting Category 2

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Draw

Label the DNA strand below: Include bases (Adenine, Guanine, Thymine, Cytosine), Sugar, and phosphate

Multiple Choice

6A A segment of DNA is represented in the illustration

How is information for a specific protein carried on the DNA molecule?

• As a sequence of nucleotides

• In the double-helix shape of the condensed chromosome

• In the ratio of adenines to thymines

• As a pattern of phosphates and sugars

Multiple Choice

6A Each strand of a DNA molecule contains nitrogenous bases that pair with other nitrogenous bases in very specific ways. A diagram of a section of DNA is shown.

3' T G T A G C T G C G C G T 5'

Which DNA strand is complementary to the one shown above?

• 5' A G U G C U G C G C G U A 3'

• 5' T G T A G C T G C G C G T 3'

• 5' A C A T C G A C G C G C A 3'

• 5' T C G C G C A G C T A C A 3'

Multiple Choice

6C Which of the following polypeptides is coded for by the mRNA sequence ′5 AUGGUUAAACGACAAUCC 3'?

• Val, Lys, Phe, Gly, Ser

• Met, Asp, Phe, Ala, Arg

• Met, Val, Lys, Arg, Gln, Ser

• Ile, Gln, Lys, Asp, Gly, Leu, Ser

Multiple Choice

6C Part of an important cellular process involving a DNA strand is modeled.

What is the purpose of this cellular process?

• Preserving genetic information for future generations

• Deleting the information in the sequence produced from the DNA template

• Transcribing information in the DNA sequence for use by the cell

• Producing more nucleotides for the DNA sequence

Multiple Choice

6E Exposure to the building material asbestos has been linked to certain types of cancers. Asbestos causes mutations in the p53 gene, which controls tumor suppression.

Which statement best explains why people with cancer due to asbestos exposure do not pass the mutation on to their offspring?

• The mutation occurred in gametic cells.

• The mutation occurred in somatic cells.

• The mutation is recessive.

• The mutation is sex-linked.

Multiple Choice

6E: Different types of mutations can occur in DNA. The diagram represents a type of mutation. Which statement describes the mutation in the diagram?

• A silent mutation results in the insertion of a different amino acid

• A substitution occurs with the adenine base

• A deletion of a cytosine base occurs

• A base is inserted into one strand of the DNA

Multiple Choice

6G: Which diagram demonstrates how crossing-over contributes to genetic variety during meiosis?

Multiple Choice

6G Gametes produced by an organism contain a combination of genes from that organism. In every gamete, this combination is —

• the same because it is created from the same DNA

• the same because chromosomes are copied prior to meiosis

• different due to DNA replication prior to mitosis

• different due to independent assortment during meiosis

Multiple Choice

6B Organisms can be classified based on homology, which is shared characteristics inherited from a common ancestor. In the past, homologies were based on studies of anatomical structures and patterns of embryonic development. In more recent years, the use of molecular biology techniques has allowed homologies to be compared at the level of nucleotide sequences. Nucleotide sequence comparisons are possible because all organisms share which of the following?

• DNA bases

• Cellular organelles

• Division of the nuclear chromosomes

• Types of proteins needed for cellular functions

Multiple Choice

6D CRISPR-Cas9 is a genetic modification technique that edits parts of the genome of an organism. Using this technique scientists can add, remove, or modify sections of the DNA sequence.

How can scientists use this technique to control gene expression?

• By activating or deactivating specific genes

• By calculating the number of genes different organisms produce

• By identifying how closely related one individual is to another

• By determining the number of chromosomes in an organism

Multiple Choice

6F Tomato plants usually have hairy stems. Hairless stems are present in tomato plants that are homozygous recessive for this trait. If the stem characteristics are determined by a single gene, what is the expected outcome of crossing two tomato plants that are heterozygous for hairy stems?

• 75% hairy stems: 25% hairless stems

• 100% hairy stems

• 100% hairless stems

• 50% hairy stems: 50% hairless stems

Multiple Choice

6F: In Holstein cattle, the allele for black hair color (B) is dominant over the allele for red hair color (r), and the allele for polled (P), or lacking horns, is dominant over the allele for having horns (p). What is the expected phenotypic ratio of the offspring of a BbPp x BbPp cross if these alleles sort independently?

• 16 black/polled : 0 black/horned : 0 red/polled : 0 red/horned

• 12 black/polled : 0 black/horned : 0 red/polled : 4 red/horned

• 4 black/polled : 4 black/horned : 4 red/polled : 4 red/horned

• 9 black/polled : 3 black/horned : 3 red/polled : 1 red/horned