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28 Cards in this Set
- Front
- Back
A diploid genotype in which both alleles are identical
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Homozygous
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A repeating structure of eukaryotic chromosomes that is composed of histones
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Nucleosome
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Alternative forms of the same gene
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Allele
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Centromere is located at the end of the chromosome
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Telocentric
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Chromosome with the centromere towards one end
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Acrocentric
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Copies of a chromosome held together by a single centromere
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Chromatid
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Genes found close together of the same chromosomes
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Linkage group
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Nuclear division that produces gametes
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Meiosis
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Principle demonstrated by Mendel that states the alternative forms of a gene will be represented in different gametes
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Segregation
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Principle discovered by Mendel that states that genes on different chromosomes behave independently
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Independent Assortment
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Stage 1 of prophase 1 when pairing of the homologous chromosomes occurs
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Pachytene
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Stage 1 of prophase 1 where chiasmata can be observed
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Diplotene
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Stage 1 of prophase 1 where chromosomes shorten
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Leptotene
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Stage 1 of prophase 1 where terminalization occurs
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Diakinesis
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Stage 1 of prophase 1 where the chromosomes first become visible
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Zygotene
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Name for the complex formed when two homologous chromosomes are paired in Meiosis I
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Bivalent
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The number of chromosomes found in gametes
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Haploid
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The position of a gene on a chromosome
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Locus
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The situation in which a single gene affects two or more characteristics
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Pleiotropy
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What you see, the result of the genotype interacting with its environment.
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Pheynotype
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An organism with the following genotype AABbCcDdeeFf can form how many different gamete types?
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2 ^4
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Alternate forms of a gene are known as
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Alleles
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Organisms with similar phenotypes
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may have different genotypes
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The principle of independent assortment applies to
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Genes on different chromosomes
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The end products of spermatogenesis are
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4 haploid cells
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Sub-stages of prophase 1
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Leptotene
Zygotene Pachytene Diplotene Diakinesis |
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Chiasma
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point where two chromatids are intertwined (interwoven) in a cell
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Chiasma
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point where two chromatids are intertwined (interwoven) in a cell
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