DNA, Chromosomes, and Genes

How many chromosomes do humans have?

• 44 chromosomes

• 46 chromosomes

• 48 chromosomes

• 50 chromosomes

What are genes?

• Segments of RNA that help in protein synthesis.

• Segments of DNA that contain the instructions for building proteins, which determine our traits and characteristics.

• Parts of the cell that regulate metabolism.

• Molecules that store energy in living organisms.

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What are homologous chromosomes?

• Pairs of chromosomes that have the same structure and carry genes for the same traits, one inherited from each parent.

• Chromosomes that are identical in size and shape but carry different genes.

• Chromosomes that are found only in gametes and are not present in somatic cells.

• Chromosomes that are formed during cell division and are not involved in genetic inheritance.

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What is the difference between a gene and an allele?

• A gene is a segment of DNA that codes for a specific trait, while an allele is a variant form of a gene.

• A gene is a type of protein, while an allele is a type of carbohydrate.

• A gene is a unit of heredity, while an allele is a type of mutation.

• A gene is found in the nucleus, while an allele is found in the cytoplasm.

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What is the relationship between DNA, genes, and chromosomes?

• DNA is a type of gene found in chromosomes.

• Genes are made up of proteins located on chromosomes.

• DNA is the molecule that makes up chromosomes, and genes are segments of DNA located on chromosomes.

• Chromosomes are made up of RNA and contain no DNA.

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What is a mutation?

• A mutation is a change in the DNA sequence of a gene that can lead to changes in the protein produced.

• A mutation is a process that repairs damaged DNA sequences.

• A mutation is a type of genetic engineering used to create new species.

• A mutation is a natural selection process that eliminates weak genes.

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What is the process of transcription?

• Transcription is the process by which the information in a gene is used to synthesize RNA.

• Transcription is the process of translating RNA into proteins.

• Transcription is the process of replicating DNA into RNA.

• Transcription is the process of synthesizing DNA from RNA.

What is the function of genes?

• To provide the instructions for the synthesis of proteins, which are essential for the structure and function of cells.

• To store energy for cellular processes.

• To transport nutrients across cell membranes.

• To regulate the temperature of the organism.

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Where are genes located?

• On chromosomes.

• In the nucleus of the cell.

• In the cytoplasm of the cell.

• On the cell membrane.

What is the role of RNA in protein synthesis?

• RNA serves as a messenger that carries the genetic information from DNA to the ribosomes, where proteins are synthesized.

• RNA is responsible for the replication of DNA during cell division.

• RNA acts as a structural component of the ribosome, providing support for protein synthesis.

• RNA is involved in the degradation of proteins after they are synthesized.