3A: DNA, Chromosomes and Genes

3B: Mitosis and Meiosis 3C: Advantages & Disadvantages of Sexual & Asexual Reproduction

3D: Natural and Artificial Selection

3E: Technologies for Recombining Genetic Material

100

Which of the above letters is pointingto a gene?

Is the above diagram representingmitosis or meiosis?

A species that reproduces this way would more likely survive inan environment that doesn’t change very muchA. Sexual B. Asexual

Indicate whether the above organismsare due to natural or artificial selection

A= artificialB = naturalC = artificialIn the diagram above a sperm is being

injected into an egg by a needle. Whattype of biotechnology is being used?A. Artificial selectionB. Artificial inseminationC. In vitro fertilizationD. CloningE. Genetic engineering

C

100

Gametes needing to join is a disadvantage of this type of reproductionA. Sexual only B. Asexual only C. Both sexual and asexual

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200 An uninterrupted segment of DNA that contains instructions for a specifictrait is known as aA. GeneB. NucleusC. Nucleotide D. Chromosome

Place numbers in the blanks below to make the sentence trueIn mitosis, there is - - stage(s) of cell division(s) while in meiosis there is - -stage(s) of cell division(s)

Place numbers in the blanks below to make the sentence trueIn mitosis, there is stage(s) of cell division(s) while in meiosis there is stage(s) of cell division(s)

Put either “asexual” or “sexual”in the blanks below to makesentence trueA disadvantage of -asexual- reproduction that there is a lackof variation in the species. Anadvantage of –asexual- reproduction is that manyoffspring can be produced veryquickly.

A disadvantage of -reproduction that there is a lackof variation in the species. Anadvantage of –reproduction is that manyoffspring can be produced veryquickly.

I. Jackrabbits have long legs which enable them to jump long distancesII. Cows have large utters which enable them to produce a lot of milkIII. Maple trees have large leaves so they can absorb a lot of sunlightIV. Black bears can move fast which enables them to catch prey such as fish

Which statement above is referring to artificial selection?

IIWhich type of biotechnology has been used by humans for the longestperiod of time?A. Artificial selectionB. Artificial inseminationC. In vitro fertilizationD. CloningE. Genetic engineering

A

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300

In a human how many chromosomeswould be found at each of the cells A, B, and C?

Which line on the graph above BESTrepresents the population growth ofa bacteria that reproduces asexually?

Which of the following would NOT be included in the theory of natural selection (remember thatonly species that reproduce sexually would evolve through natural selection)A. All organisms produce more offspring than can possibly surviveB. Each species has a lot of variation within its individualsC. Some of the variations, by chance, help some of the individuals while other variations will be a disadvantage to other individualsA. The individuals of the new generation will have the helpful traits as well as the harmful traits because both are passed on from the previous generation

D: harmful characteristics are not passed on becauseindividuals with harmful characteristics die before producing offspring

Which of the following is false?A. By taking a cutting from a plant you can produce many new individuals quicklyB. By taking a cutting from a plant you can increase the variation of the new generationC. By taking a cutting from a plant you risking the next generations survival if the environment changes

B

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400The arrow above is pointing to anucleotide, which is the building block of DNA. How many differenttypes of nucleotides are there ANDwhat is the first letter of each nucleotide?

How do chromosomalabnormalities occur?

A mistake during meiosis-Variation- helps a speciessurvive changes in itsenvironment.

-survive changes in itsenvironment.

Place words in the blanks below to make the sentence trueArtificial selection is the process of-selecting- and –breeding- of individuals with desirable traits to produce offspring that have these desired traits.

Artificial selection is the process of-individuals with desirable traits to produce offspring that have these desired traits.

Whether it is a plant or animal, an offspring that is a genetically identical copy of the parent is knownas a – clone -

Whether it is a plant or animal, an offspring that is a genetically identical copy of the parent is knownas a –

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500If you look closely inside the nucleusof the cell that is in the process ofdividing above, you can count (12 chromosomes).How many more chromosomes wouldbe needed so the cell above wouldaccurately represent a human body cell?

Place words in the blanks below to make the sentence trueMitosis occurs in the -body-cells of multicellular organisms while meiosis produces the – sex - cells of multicellular organisms.

Place words in the blanks below to make the sentence trueMitosis occurs in the -cells of multicellular organisms while meiosis produces the – multicellular organisms

Compared with a Canadian arctic hare (seen on the right below), the Californian Jackrabbit (seen on the left below) has longer ears and a longer tail.

The adaptive value of a longer tail and ears in the California Jackrabbit is that thesetraits most likely increase the jackrabbits’ ability to A. Hear at great distancesB. Stay cool in high temperaturesC. Withstand strong windsD. Turn at sharp angles quickly to avoid predatorsE. Hear at higher and lower frequencies

B

In “A” above, a gene from a thornbush that codes for the thorns is being inserted into the DNA of a certain type of flower. It is hoped thatthis flower will grow thorns so deerwill no longer try to eat it. What typeof biotechnology is being used and what word can be used to explainthe gene from diagram “A” being inserted into the DNA in diagram “B”

Genetic engineeringSplicing

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