Biology - Genetics Quiz

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

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