Scientific Laws, Hypotheses, and Theories

Study the human pedigree below showing individuals affected by a genetic disorder, and answer the questions.

 

 

 

 

 

 

 

 

 

 

 

 

 1. Does the pedigree show the phenotypes or genotypes of individuals?

     _______________________________________________________________________

 2. Is the abnormal condition above dominant or recessive? Explain.

     __________________________________________________________________________

     __________________________________________________________________________

     __________________________________________________________________________

Geneticists are often called upon to solve mysteries. Using genetic clues, give a possible solution for each of the problems below.

 

Problem: Four newborn babies in the delivery room of the local hospital were mixed up by the person who typed the wristbands. The blood types of the four babies were known to be AB, O, A, and B. How did the doctors eventually find out which baby belongs to which set of parents?

 

Parents #1 had blood types O and AB.   

Parents #2 had blood types AB and B.

Parents #3 both had blood type O.

Parents #4 had blood types A and O.

Match the babies with the correct parents

 3. Baby with type AB blood __________________________________

 4. Baby with type B blood   __________________________________

 5. Baby with type A blood   __________________________________

 6. Baby with type O blood   __________________________________

 

 

 Underline the correct response.

 

 7. If a colorblind man marries a woman who is a carrier for

     colorblindness, it is most probable that:

          a. all of their sons will have normal vision

          b. half of their sons will be colorblind

          c. all of their sons will be colorblind

          d. none of their children will have normal color vision

 

 8. Darwin observed that different, but closely related, species of finches

     filled the diverse environmental niches on the different galapagos

     islands. The filling of these environmental niches is known as:

          a. acquired characteristics

          b. blending inheritance

          c. common ancestry

          d. adaptive radiation

 

 9. In the early stages of development, the embryos of birds and reptiles

     resemble each other in many ways. This resemblance suggests that

     they

          a. belong to the same speices

          b. are adapted for life in the same habitat

          c. share a common ancestry

          d. are both animal-like protists

 

10. In addition to the basic ideas of Darwin, the modern theory of

      evolution includes the concepts that

          a. variations are the result of mutations and gene recombinations

          b. overproduction of organisms leads to extinction

          c. variations exist only in large populations

          d. competition occurs only between members of the same species

 

Scientific Laws, Hypotheses, and Theories

Each of the following statements contains an underlined word or phrase that makes the statement false. On the blank, write the word or phrase that will make the statement true.

 

 1. a. Monerans are eukaryotes and have no membrane-bond organelles.

         ________________________

     b. The two types of cell extensions are cilia and flagella. _______________

     c. The drug tetracycline stops the formation of a rigid cell wall.

         ________________________

 2. List four evolutionary adaptations in bacteria that have allowed them

     to survive for billions of years and expand into multiple habitats.

     a. ________________________________________________________________________

     b. ________________________________________________________________________

     c. ________________________________________________________________________

     d. _______________________________________________________________________

         _______________________________________________________________________

 3. Match the description or definition with the correct term.

     a. botulism     b. decomposer     c. facultative anaerobe    d. endospore

     e. chemosynthesis             f. obligate aerobe

     ______ an organism that breaks down organic matter

     ______ a bacterium that must have free oxygen to live

     ______ a deadly form of food poisoning

     ______ a structure resistant to adverse environmental factors

     ______ a bacterium that does not use oxygen during respiration

 List and explain three (3) ways in which bacteria exchange genetic

 material.

   4. ________________________________________________________________________

     __________________________________________________________________________

   5. ________________________________________________________________________

     __________________________________________________________________________

   6. _______________________________________________________________________

     __________________________________________________________________________

 

 

 7. What is an extremophile? Are all archaea extremophiles? ________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

8. What is a chemoautotroph?______________________________________________

____________________________________________________________________________________________________________________________________________________________

 9. Which type of medical doctor probably needs to know a great deal

     about fungi – an orthopedic specialist or a dermatologist? Why?

     __________________________________________________________________________

     __________________________________________________________________________

     __________________________________________________________________________

10. Match the bacterial diseases with the different Patients.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 1. A plant has a life cycle with alternating diploid and haploid stages. The

     diploid stage of a plant which produces sex organs which produces gametes is called the

     ________________ stage. The stage of a plant which produces spores

     is therefore called the ________________ stage. The life cycle is known as

     Alternation of Generations.

 2. Plants are often divided into the categories of nonvascular and

     vascular. (see Diversity Lab II for a breakdown) List three (3) ways

     vascular plants differ from bryophytes.

          a. _____________________________________________________________________

            _____________________________________________________________________

          b. _____________________________________________________________________

             _____________________________________________________________________

          c. _____________________________________________________________________

            _____________________________________________________________________

 3. Why are ferns less tied to a moist environment than mosses? Why are

     they more tied to a moist environment than seed plants?

     __________________________________________________________________________

     __________________________________________________________________________

     __________________________________________________________________________

     __________________________________________________________________________

 4. Distinguish between pollen, a seed and a fruit.

     __________________________________________________________________________

     __________________________________________________________________________

     __________________________________________________________________________

     __________________________________________________________________________

5.-10. Match the following animal groups with the list of features. Some

     groups may have more than one feature. Use the letter of each group.

A. sponges   B. cnidarians  C. flatworms   D. roundworms   E. arthropods

F. mollusks   G. annelids   H. echinoderms   I. chordates   J. amphibians

K. cartilaginous fishes   L. ray-finned fishes   M. reptiles   N. turtles

O. snakes   P. birds   Q. mammals

 

__________   muscular foot responsible for locomotion

__________   swim bladder

__________   the only animals that lack tissues

__________   adaptations for subduing large prey and swallowing them

                  whole

__________   muscles all run longitudinally--from head to tail--down the

                  body, resulting in a flailing whiplike motion

__________   polyp stage and a medusa stage alternate

__________   leeches

__________   segmented worms

__________   segmented bodies and jointed legs

__________   terrestrial vertebrates restricted to moist environments

                  because their skins are composed of living cells that are

                  vulnerable to drying out, and lay eggs without shells

__________   maintain a constant flow of water in through numerous pores,

                  into the central cavity, and out the top, whose purpose is for

                  food capture

__________   birds and crocodiles

__________   tube feet

__________   tentacles armed with barbed stinging cells

__________   hollow bones, air sacs in the body, and a four-chambered heart

__________   includes the group known as the insects

__________   a notochord, gill slits, and a tail that extends beyond the anus

__________   starfish

__________   skeleton made of cartilage

__________   have hair and feed their young milk

__________   tapeworms

__________   platypus

__________   squeezes its entire body inside its ribcage

__________   flying endotherms

__________   frogs

__________   you