Biology - Genetics Quiz

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Hollow rods constructed from tubulin, grow in length by adding tubulin dimers.
Protein that breaks, swivels, and rejoins DNA strands. During DNA replication, helps relieve strain in the double helix ahead of rep. fork.
Bind to the unpaired DNA strands after parental strands separate, keeping them from reconnecting
Large vesicles derived from the ER & golgi apparatus, integral part of cell's endomembrane system.
Coded information in the form of hereditary units.
A gene's specific location along the length of a chromosome.
stacks of thylakoids
Solid rods, short, and can for structural networks
2nd compartment of the mitochondrion, enclosed by the inner membrane. contains many different enzymes as well as mitochondrial DNA and ribosomes.
An extensive network of membrane that accounts for more than half the total membrane in many euk. cells.
Genes located near each other on the same chromosome, they tend to be inherited together
Tiny complexes that make proteins according to instructions from the genes, all cells have these. Made of RNA and protein.
Mating of two variants.
At the boundary of every cell. Functions as a selective barrier that allows passage of enough oxygen, nutrients, and wastes to service the entire cell.
States that two alleles of a heritable character segregate from one another during gamete formation & end up with different gametes.
Genes located on the X chromosome
Type of DNA replication in which the replicated double helix consists of one old strand, derived from the parental molecule, and one newly made strand.
States that each pair of alleles segregates independently of each other pair of alleles during gamete formation
A region often located near the nucleus and is considered a 'microtubule organization center'
Proteins that have carbs covalently bonded to them.
Site of cellular respiration, metabolic process that uses oxygen to produce ATP by extracting energy from sugars, fats, and other fuels.
Membrane enclosed structures within eukaryotic cells.
A long cellular appendage specialized for locomotion
Contains most of the genes in the eukaryotic cell.
When one trait is dominant and the other is recessive
When an error is missed, other enzymes remove and replace incorrectly paired nucleotides.
Outer surface lacks ribosomes. Synthesis of lipids, metabolism of carbs, detox of poison, and storage of calcium.
When an incorrect segment of nucleotides is incorrect, they're cut out and refilled.
Synthesizes completely using just one primer
Two parents give rise to offspring that have unique combinations of genes inherited from the two parents.
proteins responsible for the first level of DNA packing in chromatin.
Any cell with 2 chromosome sets, doesn't include sex cells.
A group of genetically identical individuals.
At the ends of replication bubbles, y-shaped region where particular strands of DNA are being unwound
fluid outside chloroplast DNA
A netlike array of protein filaments that maintain the shape of the nucleus by mechanically supporting the nuclear envelope
Found in plants and algae, sites of photosynthesis
Parental generation.
An offspring whose phenotype differs from that of the true-breeding P generation parents. Also refers to the phenotype itself.
Larger than microfilaments but shorter than microtubules. Specialize in bearing tension.
Exists at the point where a cross-over has occured.
When subunits run in opposite directions
Breeding an organism with an unknown genotype w/ one with homozygous recessive, in order to determine the genotype of the unknown
The interior of a cell.
aneuploidy involving an extra/third chromosome
Many factors including genetics, and the environment collectively affect phenotype
Membranous sac of hydrolytic enzymes that animal cells use to digest macromolecules.
X & Y chromosomes. They determine an individual's sex. (Females=XX, Males=XY)
A framework of protein fibres extending throughout the nuclear interior
Short appendage used for movement
When neither allele is completely dominant & their phenotype is a mix between the two alleles (eg. pink flowers from white and red parents)
Gamete cells require this, reduces # of sets of chromosomes from 2 to 1 in gametes.
Where replication of DNA begins.
1/3 types of animal cell junction
During Prophase I duplicated homologs are connected to each other via the synaptonemal complex. Doesn't occur in Mitosis.
Organism that has a pair of identical alleles for a gene
The lesser condensed form of chromatin that can be transcribed
DNA molecules that contain no genes used to protect organism's genes from cutting too far.
Includes the nuclear envelope, the ER, golgi apparatus, lysosomes, various types of vesicles and vacuoles, and the plasma membrane.
Display of condensed chromosomes arranged in pairs. Used to screen for defective chromosomes associated with certain congenital disorders.
Humans have 46. Includes all cells of the body except gametes & their precursors.
Diagram used for predicting the allele composition of offspring
The inactive X in each cell of a female condenses into a compact object.
Specialized metabolic compartment bonded by a single membrane. Cooperates with chloroplasts and mitochondrion in certain metabolic functions
An additive effect of 2 or more genes on a single phenotype character.
genetic map based on recombination frequencies
The phenotype for a character most commonly observed in a natural population
Each variant for a character of an individual.
During Prophase I chromosomes attach to their non-sister chromatid counterparts and exchange DNA segments, doesn't occur in Mitosis.
1st filial generation
Occurs while replicated homologs are paired during meiosis 1.
Extracellular structure of plant cells. distinguishes them from animal cells. protects plant cells, maintains its shape, and prevents excessive uptake of water.
an animal's version of a cell wall. Contains glycoproteins and other carb. molecules/
Variation in phenotype depending on whether an allele came from the male or the female
1/3 types of animal cell junction
Infoldings of an inner membrane
All other chromosomes, humans have 46.
Only produce the same variety as the parent organism, even over many generations.
A warehouse for receiving, sorting, shipping and manufacturing products of the ER.
Heterozygotes who though they don't show any phenotypic affects, could pass the recessive allele on to the next generation
Genotype that is associated with a range of phenotypic possibilities due to environmental influences
A network of fibers extending through the cytoplasm
Complex of DNA and protein, fits into the nucleus through an elaborate, multilevel packing system.
The purpose of meiosis I, reduces the chromosomes in half.
Sacs made of membrane, tiny.
When the two alleles affect the phenotype in seperate, distinguishable ways
Two chromosomes that have the same length, centromere, position, & staining pattern.
The phenotypic expression of a gene at one locus alters that of a gene at a second locus
Catalyses the synthesis of new DNA by adding nucleotides to the preexisting chain.
encloses the nucleus, separating its contents from the cytoplasm. double membrane, lined by nuclear lamina.
Alternative versions of a gene
flattened, interconnected sac in chloroplast
Catalyses the lengthening of telomeres compensating for the shortening during DNA replication.
Specialized structure in the nucleus that consist of chromosomal regions containing rRna genes and ribosomal protein. The site of rRna synthesis and ribosomal subunit assembly.
Reproductive cells which are the vehicles that transmit genes from one generation to the next.
Organism's outward appearance/observable traits
One of a family of closely related organelles that includes chloroplasts, chromoplasts, amyloplasts, photosynthesis.
1/3 types of animal cell junction
ordered list of genetic loci along a chromosome
A single individual is the sole parent & passes copies of all its genes to its offspring without the fusion of gametes.
Contain a single set of chromosomes. Each has a haploid number of chromosomes. Sex cells.
Studded with ribosomes on the outer surface of the membrane. Proteins attach to this.
Enzymes that untwist the double helix at the replication forks, separating the two parental strands and make them available as template strands.
Inside the centrosome, consist of 9 sets of triplet microtubules arranged in a ring.
Synthesizes discontinuously as a series of segments
2nd filial generation
Family tree describing the traits of parents & children across the generations
Proteins built into the plasma membrane. Transmit signals between the ECM and cytoskeleton and indicate changes.
Inside all cells, semifluid, jellylike substance in which all subcellular components are suspended.
Produced by mitotic division of a zygote, multicellular diploid.
The initial nucleotide chain that is produced during DNA synthesis is a short stretch of RNA. Starts a complimentary RNA chain so that DNA synthesis can continue.
Organism that has 2 different alleles for a gene
A gene with multiple phenotypic affects
An mishap in the distribution of chromosomes by the meiotic spindle which the members of homologs dont move apart properly or don't seperate during meiosis II
Perforate cell walls. Membrane-line channels filled with cytoplasm.
A gene located on the X chromosome
Eukaryotic chromatin that remains highly compact during interphase and is genetically not transcribed
2nd type of life, includes both diploid & haploid stages that are multicellular.
Multicellular haploid that's named for its production by mitosis of haploid gametes.
aneuploidy involving a missing chromosome
Individual chromosomes that carry genes derived from 2 different parents.
Characters that don't vary categorically (eg. height, skin color)
Organism's genetic makeup, outward appearance does not display the full picture
When an abnormal gamete unites with a normal gamete, the zygote will also have an abnormal number of a particular chromosome

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