Biology 1201 Learning Catalytics Unit 3 LSU Fall 2017 Licata – Flashcards
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human somatic cells
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all answers are correct
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DNA replication occurs
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during interphase
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the mitotic spindle is made up of
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microtubles
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in a typical karyotype of a diploid organism, how many copies of each chromosomes (e.g. chromosomes 3) are there?
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four of each - the two homologs and their two sister chromatids
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which of the following is not haploid
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sporophytes
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synapsis
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all of the answers are correct
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an organism has 3 haploid chromosomes. how many combinations of chromosomes can it make in its gametes using only independent assortment?
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8
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which of the following describes an allele
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all answers are correct
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yellow flowers = Y = dominant blue flowers = y = recessive you cross a yellow plant (of unknown genotype) with a homozygous blue plant and the F1 generation is half blue and half yellow this means:
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the unknown genotype is Yy
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yellow flowers = Y = dominant blue flowers = y = recessive you cross a yellow plant (of unknown genotype) with a homozygous blue plant and the F1 generation is green this means:
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the unknown genotype is YY
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which of the following traits is the most polygenic
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eyesight acuity (e.g. 20/20 vision)
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Who showed that bacteriophages transfer DNA to bacteria when they infect them?
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Hershey and Chase
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the two strands of DNA are held together by:
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base pairing
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topoisomerase:
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unwinds DNA
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the main replicative polymerase in most bacteria is
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DNA Pol III
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which if the following proteins is not used during DNA repair
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DNA helicase
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which of the following was discovered by Thomas Hunt Morgan?
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crossing over or homologous recombination
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if only males get a specific disease, it must be because the mutation causing the disease
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is on the Y chromosome
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which if the following does not happen during crossing over (recombination):
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nondisjunction
