BIOL 1115: Chapter 13 VOCAB Langara

30 cards

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Created Nov 9, 2010
by
tranc3r

 

 
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1
Heredity
 
The transmission of traits from one generation to the next.
2
Variation
 
Offspring differ somewhat from parents and siblings
3
Genetics
 
The study of heredity and variation
4
Locus
 
The PHYSICAL address (specific locatino) of a gene/trait.
5
Asexual Reproduction
 
A single individual passes along copies of all its genes to its offspring (Cloning/mitosis).
6
Budding
 
Form of asexual reproduction that multicellular eukaryotes undogo.
7
Sexual Reproduction
 
Form of reproduction that mixes the chromosomes of parents' gametes.
8
Gametes
 
Sex cells
9
Somatic Cells
 
Human cells that have 46 chromosomes
10
Karyotype
 
The number and appearance of chromosomes in the nucleus of a eukaryote
11
Homologous chromosome
 
Chromosomes having the same size, shape, binding pattern, and array of genes
12
Sex chromosomes
 
The X and Y chromosomes.
13
Autosomes
 
Chromosome that is not a sex chromosome
14
Haploid
 
A cell that has only half the number of chromosomes that the other cells of that organism...
15
Diploid
 
An organism or cell having the normal amount of DNA per cell.
16
Zygote
 
Feritilized egg
17
Meiosis
 
Process where chromosomes are halved.
18
Alternation of generation
 
A life cycle that includes both haploid and diploid multicellular stages.
19
Gametophyte
 
The plant which produces gametes by mitosis in order to produce a zygote (haploid moment of...
20
Sporophyte
 
The plant which produces spores by meiosis in order to produce gametophytes (diploid moment...
21
Spores
 
Structures found on plants that release gametes into their environment.
22
Homologous Chromosomes
 
A chromosome with the same gene sequence as another.
23
Tetrads
 
Found in homologous chromosomes, the structure contains 4 chromatids
24
Synapsis
 
The side by side pairing of homologous maternal and paternal chromosomes at the start of meiosis
25
Chiasmata
 
Crossing over of genetic information between the homologous pairs.
26
Centrosome
 
An organelle that serves as the main microtubule organizing center of the animal cell.
27
Kinetochore
 
The protein structure on chromosomes where the spindle fibers attach during division to pull...
28
Reduction Division
 
The number of chromosomes per cell is cut in half.
29
Crossing Over
 
The exchange of genes between homologous chromosomes.
30
Recombinant Chromosomes
 
The result of the combined genes by the crossing of alleles between two homologous pairs.


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