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5 Written questions

5 Matching questions

  1. What is crossing over? When does it occur? Why is it important?
  2. What is the difference between spermatogenesis and oogenesis?
  3. What is a Punnett square? What is a pedigree? How are they different?
  4. What is the difference between an autosome and a sex chromosome? How many of each are found in a gamete and in a somatic cell?
  5. Why did Mendel use garden peas?
  1. a Sex chromosome: chromosomes that determine the sex of a offspring
    1 in human gametes
    2 in human somatic cells

    Autosomes: chromosomes that carry genes for all trats except the sex of the offspring.
    22 in human gametes
    44 in human somatic cells
  2. b 1) They have very contrasting traits
    2) Can both self-pollinate and cross pollinate
    3) Easy to grow
  3. c Spermatogenesis is for males and it goes through meiosis 1 and meiosis 2 to create 4 haploid gametes that change into sperm cells.

    Oogenesis is for females and it goes through 2 stages of meiosis to create 1 ovum and 3 other polar bodies.
  4. d Punnett Square- Model that predicts the likely outcome of a genetic cross
    Pedigree- family history that shows how a specific trait has been inherited over many generations
    Differences- Punnett squares: show possible outcomes of a cross; pedigrees- can determine sex linkage, dominant alleles and heterozygousity of parents
  5. e Crossing over is when homologous chromosomes exchange genetic material by crossing 1 leg over the other breaking off and reattaching to the opposite chromosome.
    Occurs during prophase 1 of meiosis 1.
    Increases genetic variation within a species.

5 Multiple choice questions

  1. He presented evidence that evolution happens and offered a correct reason as to how
  2. Only mutations that are in germ cells are heritable
  3. microevolution- looks at the process by which inherited traits change over time in a population
    5 major processes that affect the kinds of genes in a population from generation to generation are migration, mate choice, natural selection , mutation, and genetic drift

    macroevolution- looks at the patterns in which new species evolve by studying the direction, diversity, or speed of change. Patterns are convergent evolution, co-evolution, adaptive radiation, extinction, gradualism and punctuated equilibrium.
  4. Bacterial STDs, Viral STDs, Parasitic STDs
  5. ...

5 True/False questions

  1. What are some risk factors for drug use?1) friends who use
    2) low self esteem
    3) lack of involvement in activities
    4) availability of drugs

          

  2. What makes one protein different from another?The sequence of amino acids.

          

  3. What causes cancer?Mutation in the cell cycle

          

  4. What is the difference between the haploid number and the diploid number?Spermatogenesis is for males and it goes through meiosis 1 and meiosis 2 to create 4 haploid gametes that change into sperm cells.

    Oogenesis is for females and it goes through 2 stages of meiosis to create 1 ovum and 3 other polar bodies.

          

  5. What is reproduction? What are the two main types? Explain each.The process of change by which new species develop from preexisting species over time
    The idea of natural election if why evolution happens
    Individuals with traits advantageous to survival will produce more offspring
    Over time the number of individuals possessing those traits will increase in a population