Heredity

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heplac
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53479
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Heredity
Updated:
2010-12-05 16:26:25
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AP II
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Chapter 29 Heredity
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  1. What are two inheritance traits
    Offspring resemble their parents, but not exactly and Siblings resemble each other, but not exactly
  2. Adults produce what in their gonands by meiosis?
    gametes
  3. When a sperm cell fertilize an egg cell to form a single cell called what?
    zygote
  4. When a zygote has repeated cell division this forms what?
    an embryo
  5. T or F Chromosomes are uncondensed before cell division
    True
  6. The area where duplicated chromosomes are held together
    Centromere
  7. Duplicated chromosomes, held together at the centromere, are called what?
    Sister Chromatids
  8. How are Chromosomes are duplicated?
    Through DNA replication
  9. Matched genes, which are at the same locus (location) on homologous chromosomes are called what?
    alleles
  10. When two alleles controlling a trait are the same, a person is said to be?
    homozygous
  11. When two alleles controlling a trait are different, a person is said to be?
    heterozygous
  12. Sometimes, one allele masks or suppresses the expression of its partner is said to be what?
    dominant
  13. Sometimes, one allele masks or suppresses the expression of its partner is said to be dominant, whereas the allele that is masked is said to be
    recessive
  14. The study based on the genetic make-up
    Genotype
  15. The observation based on the visible character, based on the genetic make-up
    Phenotype
  16. The inheritance of a single characteristic is called what (tall vs short)
    Monohybrid
  17. The inheritance of two characteristic is called what (yellow, green vs round, wrinkle)
    Dihybrid
  18. Specialized form of cell division in gonads to produce gametes
    Meiosis
  19. Meiosis reduces the number of chromosomes in each cell by what
    one half
  20. Chromosomes come in what types of pairs?
    homologous pairs
  21. Chromosomes come in homologous pairs and gamete (formed from cell division in the gonads) gets how many chromosomes from each pair
    one
  22. What type of cell has 22 pairs of autosomes, and one pair of sex chromosomes
    a somatic cell
  23. Gametes have what type of chromosome
    haploid
  24. Somatic cells have what type chromosomes
    diploid
  25. In humans, the total number of chromosomes present how many
    46 or 23 pairs
  26. Out of 23 pairs of chromosomes how are they broken down
    22 pairs of autosomal and 1 pair of sex chromosomes (X and Y sex chromosomes)
  27. What does a male chomosome look like
    44+X+Y
  28. What does a female chomosome look like
    44+X+X
  29. Before meiosis, there is an interphase what happens there
    DNA is duplicated
  30. Meiosis takes place in two stages, what are the stages
    meiosis I and meiosis II
  31. During what phase of meiosis does the separation of members of a homologous pair happen
    Meiosis I
  32. During what phase might there be crossing over between members of homologous pair
    prophase I
  33. Meiosis II is essentially like mitosis; it separates what?
    sister chromatids
  34. A single egg is fertilized by a single sperm in a random manner, what is this called
    Random alignment
  35. A single egg is fertilized by a single sperm in a random manner is called random alignment and what is the result?
    different types of gamates being formed
  36. An offspring represents one out of how many zygote possibilities
    72 trillion
  37. This is who studied the characters of pea plants and predicted the characters of the offspring.
    Mendel
  38. Mendel studied the characters of pea plants and predicted the characters of the offspring. We now know The character is dependent on what?
    the gene that is present in chromosomes
  39. What is the two Mendelian Laws
    1. law of segregation and 2. law of independent assortment
  40. The law of segregation is the separation of charaters and means what
    tall plants can produce tall and short plants but short plants always give short plants.
  41. In the law of segregation tall plants can produce tall and short plants but short plants always give short plants so the character of short is called what
    true trend or trait
  42. What is the definition of the law of independent assortment
    The expression of one character is independent of another. i.e. it is not influenced by any other factors
  43. What is the percentage of the white population with O, A, B and AB blood type
    45,40,11,4

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