Answer key: Why Science Loves Twins

Lesson Plan: Dynamic Duos: Why Science Loves Twins”

II. While Reading Activities

Word Inference

  1. nuanced |ˈn(y)o͞oˌäns| noun-a subtle difference in or shade of meaning, expression, or sound: the nuances of facial expression and body language.
  2. genetics |jəˈnediks| pl.noun [treated as singular] the study of heredity and the variation of inherited characteristics.
  3. Obesity |ōˈbēsədē| noun-the condition of being grossly fat or overweight: the problem of obesity among children.
  4. fertility  |fərˈtilədē| noun–the quality of being fertile; productiveness: improve the soil fertility by adding compost.
  5. in vitro fertilization noun -a medical procedure whereby an egg is fertilized by sperm in a test tube or elsewhere outside the body: individuals who seek to become parents using in vitro fertilization.
  6. exclusive |ikˈsklo͞osiv| adjective –restricted or limited to the person, group, or area concerned: the couple had exclusive possession of the condo | the jaguar and puma are exclusive to the New World.
  7. genetic code |jəˈnedik kōd| noun–the nucleotide triplets of DNA and RNA molecules that carry genetic information in living cells.
  8. Biometric |ˌbīōˈmetrik| adjective-relating to or involving the application of statistical analysis to biological data: a biometric passport.
  9. petri dish |ˈpētrē ˌdiSH| noun- a shallow, circular, transparent dish with a flat lid, used for the culture of microorganisms.
  10. fraternal twin noun-either of a pair of twins who, as a result of developing from separate fertilized ova, are genetically distinct and not necessarily of the same sex or more similar in appearance than other siblings:

Source: New Oxford American Dictionary   

Grammar Focus: Identifying Prepositions

Environment was less contributory on the whole.

One of the broadest studies of twins in the United States takes place in Ohio.

Roughly 33 in every 1,000 human births in the United States are twins.

Decades ago, there was very little acknowledgment of genetic influences on children’s mental health.


Reading Comprehension: Fill-ins

Our question is whether some people are taste-blind and, if so, to what? Our interest is whether this is a genetically determined trait. We like to compare genetically identical twins to twins that are no more similar than ordinary siblings.