Molecular Basis Of Heredity For Leland Hs Bio II

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    The process of copying information from DNA to RNA is ____________________

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About This Quiz

Explore the fundamentals of genetics with the 'Molecular Basis of Heredity for Leland HS Bio II' quiz. This educational tool tests knowledge on alleles, phenotypes, dominant traits, genes, and the transcription process, essential for understanding hereditary mechanisms.

Molecular Basis Of Heredity For Leland Hs Bio II - Quiz

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  • 2. 

    This is an observable trait of an organism that can mask the recessive trait.

    • Recessive

    • Appearance

    • Dominant

    • Competitive

    Correct Answer
    A. Dominant
    Explanation
    Dominant traits are observable traits that can mask the presence of recessive traits. These traits are expressed in an organism's phenotype, or physical appearance. In a genetic cross between two organisms, if one parent carries a dominant allele for a particular trait, it will be expressed in the offspring, regardless of whether the other parent carries a recessive allele for that trait. This is why the term "dominant" is the correct answer, as it describes the observable trait that can override the recessive trait.

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  • 3. 

    An organism that has two identical alleles for the same trait is heterozygous

    • True

    • False

    Correct Answer
    A. False
    Explanation
    The given statement is incorrect. An organism that has two identical alleles for the same trait is actually homozygous, not heterozygous. Heterozygous refers to an organism that has two different alleles for the same trait.

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  • 4. 

    The physical appearance of a gene

    • Genotype

    • Inheritance

    • Phenotype

    • Mesotype

    Correct Answer
    A. Phenotype
    Explanation
    Phenotype refers to the physical appearance or characteristics of an organism, which are determined by its genotype and influenced by environmental factors. It includes observable traits such as hair color, eye color, and height. The genotype, on the other hand, refers to the genetic makeup of an organism, which determines its inherited traits. Inheritance is the process by which traits are passed down from parents to offspring. Mesotype is not a recognized term in genetics.

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  • 5. 

    Mitosis is a process where a parent cell divides into four sex cells with half the chromosomes.

    • True

    • False

    Correct Answer
    A. False
    Explanation
    This is meiosis

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  • 6. 

    The structure that houses the cells genetic information.

    • The endoplasmic reticulum

    • The cell membrane

    • The cytoplasm

    • The nucleus

    Correct Answer
    A. The nucleus
    Explanation
    The nucleus is the correct answer because it is the structure that houses the cell's genetic information. It contains the cell's DNA, which carries the instructions for the cell's functions and characteristics. The nucleus is surrounded by a nuclear membrane, which separates it from the rest of the cell's cytoplasm. Inside the nucleus, there is a nucleolus and chromatin, which condenses into chromosomes during cell division. Overall, the nucleus plays a crucial role in controlling the cell's activities and transmitting genetic information to future generations.

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  • 7. 

    This is the complete set of all chromosomes of a cell of any living organism. They are often displayed in a photograph of chromosomes that have been grouped into matching pairs.

    • Genotype

    • Multiple Alleles

    • Karotype

    • Phenotype

    Correct Answer
    A. Karotype
    Explanation
    A karyotype refers to the complete set of chromosomes in a cell of any living organism. It is often displayed in a photograph where the chromosomes are grouped into matching pairs. This allows scientists to analyze and study the structure and number of chromosomes in an individual. By examining the karyotype, genetic abnormalities and disorders can be identified.

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  • 8. 

    This is a segment of DNA on the chromosome that is coded for a particular trait.

    • Chromosome

    • Nucleotide

    • Gene

    • Chromatid

    Correct Answer
    A. Gene
    Explanation
    A gene is a segment of DNA on the chromosome that is coded for a particular trait. Genes are responsible for carrying the instructions for making proteins, which are essential for the functioning and development of an organism. Each gene contains the information needed to produce a specific protein or RNA molecule, which ultimately determines the expression of a particular trait.

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  • 9. 

    An allele is one of two or more alternative forms of a gene that arise by mutation and are found at the same place on a chromosome 

    • True

    • False

    Correct Answer
    A. True
    Explanation
    An allele refers to the different versions or variations of a gene that can arise due to mutations. These alleles are located at the same position on a chromosome. Therefore, the statement that an allele is one of two or more alternative forms of a gene that arise by mutation and are found at the same place on a chromosome is true.

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  • 10. 

    RNA differs from DNA in the following ways

    • DNA is double stranded and RNA is single stranded

    • The bases of DNA include adenine while RNA uses uracil in its place

    • Only DNA codes for genetic information

    • RNA codes for information passed between the nucleus and the rest of the cell

    Correct Answer(s)
    A. DNA is double stranded and RNA is single stranded
    A. Only DNA codes for genetic information
    A. RNA codes for information passed between the nucleus and the rest of the cell
    Explanation
    DNA is double stranded and RNA is single stranded. This means that DNA consists of two complementary strands of nucleotides, while RNA consists of a single strand. Only DNA codes for genetic information, as it contains the instructions for the synthesis of proteins and the transmission of hereditary traits. On the other hand, RNA codes for information passed between the nucleus and the rest of the cell. It plays a crucial role in gene expression by carrying the genetic information from the DNA to the ribosomes, where proteins are synthesized.

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  • Mar 20, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Dec 13, 2016
    Quiz Created by
    Kenm21804
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