Genetics: 1

Match the definition to the subdisciplines of genetics:
A. transmission genetics
B.Molecular genetics
C. Evolutionary genetics
1. Studies the origins of and genetic relationships between organisms and the evolution oftraits and genes/genomes
2.Studies inheritance and variation in nucleic acids (DNA and RNA), proteins, andgenomes and connects them to inherited variation and evolution in organisms
3."Mendelian" genetics -> transmission of traits and characteristics between successivegenerations (inheritance)
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Terms in this set (49)
Match the definition to the subdisciplines of genetics:
A. transmission genetics
B.Molecular genetics
C. Evolutionary genetics
1. Studies the origins of and genetic relationships between organisms and the evolution oftraits and genes/genomes
2.Studies inheritance and variation in nucleic acids (DNA and RNA), proteins, andgenomes and connects them to inherited variation and evolution in organisms
3."Mendelian" genetics -> transmission of traits and characteristics between successivegenerations (inheritance)
A.3
B.2
C.1
how many chromosomes do human gametes have
23
which phase does dna replication occur?
G1 phase
m-phase
s phase
G2 phase
s phase
in which of these phases are chromatin found?
s-phase
m-phase
G2 phase
G1 phase
G2 phase
which phase do microtubules begin to extend
s-phase
m-phase
G2 phase
G1 phase
G2 phase
which phase do chromosomes begin to condense in m-phase
prophase
what phase do sister chromatids attache
prophase
When does the nuclear envelope break down?
prometaphase
when does mitotic spindle attache to kinetechores
prometaphase
what protein binds sister chromatin together?
cohesion protein
which of the following elongate AND stabilize the cell during m-phase kinetochore microtubules astral microtubules nonkinetochore microtubulesnonkinetochorein which phase does disjunction occur in mitosis? metaphase prophase anaphase telophaseanaphasedefine disjunctionseparation of sister chromatidswhich of the following move chromosomes? kinetochore microtubules astral microtubules nonkinetochore microtubuleskinetochore microtubuleswhich of the following only stabilize the cell? kinetochore microtubules astral microtubules nonkinetochore microtubulesastralwhich phase within mitosis divides the cytoplasmic contents equally between the daughter cellscytokinesiswhich checkpoint makes sure that the cell size is adequate, nutrients availability is good, and that there is a presence of growth factors G1 S G2 MG1which checkpoint makes sure that DNA replication is complete and base-pair mismatches/errors are removed. G1 S G2 MSwhich checkpoint makes sure that cell size isadequate, chromosome replication is complete G1 S G2 MG2what is the requirement for the cell cycle to continue past the metaphase checkpoint?all chromosomes are attached to mitotic spindletrue or false: germ-line cells have the exact same interphase as somatic cellstruetrue or false: homologous chromosomes seperate in anaphase of mitosisfalse: homologous chromosomes do NOT attach in mitosis. They only attach in meiosishow many chromatids are present in G2phase92what are the three hallmark events of meiosissynapsis of homologous chromosomes, crossing over of homologous chromosomes, separation of homologous chromosomesat what point is there recombination in meiosiswhen the homologous chromosomes cross over, recombination occurs at the cross over site.define chiasmataPoint of crossover in a tetrad during meiosisin which of the following stages are chromosomes duplicated? Leptotene Diakinesis Pachytene Zygotene Diploteneleptotenein which of the following are chromosomes condense Leptotene Diakinesis Pachytene Zygotene Diploteneleptotenein which of the following phases are centrosomes migrating to poles and spindle fibres are produced Leptotene Diakinesis Pachytene Zygotene DiploteneLeptotenein which of the phases do homologous pairs enter synapsis where the synaptonemal complex is formed Leptotene Diakinesis Pachytene Zygotene Diplotenezygotenetrue or false: the synaptonemal complex tightly binds sister chromatids in meiosisfalse: the synaptonemal complex tightly binds NON-SISTER chromatidsin which of the phases are homologs finally bivalents? Leptotene Diakinesis Pachytene Zygotene Diplotenepachytenein which phase is the chiasmata formed? Leptotene Diakinesis Pachytene Zygotene Diplotenepachytenein which of these phases does the synaptonemal complex dissolves but the chiasmata remain? Leptotene Diakinesis Pachytene Zygotene Diplotenediplotenein which of the following phases do the tetrads move towards the middle of the cell? Leptotene Diakinesis Pachytene Zygotene Diplotenediakinesisdo bivalents have one or two centromeres?twodo pairs sister chromatids have one or two centromeres?onedefine independent assortmentwhen alleles of two or more different genes get sorted independently of one anotherwhat is the equation for possible combinations in independent assortment?2^(n-1) where n is the number of homologous pairswhich of the following do Leptotene, Diakinesis, Pachytene, Zygotene, and Diplotene occur? Prophase, metaphase, anaphase, telophase, all of the aboveprophasein which of the following stages do alleles segregate? Anaphase I Anaphase II Zygotene Diploteneanaphase Idefine disjunctionwhen homologs are pulled to opposite poleswhen does disjunction occur? Anaphase I Anaphase Anaphase II Anaphase, Anaphase I Anaphase, Anaphase I, Anaphase IIanaphase, anaphase I, anaphase IIafter Meiosis I, how many chromosomes are there? how many chromatids are there?23 chromosomes 46 chromatidsafter Meiosis II, how many chromosomes are there? how many chromatids are there?23 chromosomes and 23 chromatidsif at the start of meiosis, there is 2ng of DNA present, how many ng of DNA is present after Meiosis II1nghow many nanograms of DNA are in a fertilized egg?2ng (1ng from sperm and 1 ng from egg)what is nondisjunction?when chromosomes fail to separatewhat causes aneuploidy? what is the result of aneuploidy?nondisjunction, results in extra and/or missing chromosomes