________ is when each cell has three copies of that chromosome.
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Synapsis
________ is a tight side- by- side pairing of homologous chromosomes along their corresponding regions.
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process of chromosome exchange
The ________ is called crossing over.
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Nondisjunction
________ is when the homologs or sister chromatids fail to separate, or disjoin.
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Monosomy
________ is when there is only one copy of one of the chromosomes.
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Biologists
________ use the term allele to denote a particular version of a gene.
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Polyploid
________ means that they have three or more of each type of chromosome in each cell.
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Cells
________ that have too many or too few chromosomes of a particular type are said to be aneuploid.
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autosomes
Any chromosomes other than sex chromosomes are called ________.
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Chromatids
________ from different homologs are referred to as non- sister ________.
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homologs
The ________ are held together by a network of proteins called the synaptonemal complex.
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Primary oocytes
________, which are diploid precursors to eggs, enter meiosis I during embryonic development and arrest in prophase I until the female reaches sexual maturity.
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X
The ________ and Y chromosomes are called sex chromosomes and are associated with an individuals sex.
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harmful alleles
Offspring are not doomed to inherit ________.
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gene
A(n) ________ is a segment of DNA, found at a specific place on a chromosome, that influences a trait.
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Sexual reproduction
________ is the production of offspring through the generation and fusion of gametes.
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haploid daughter
In animals, some or all of the ________ cells go on to form egg cells or sperm cells in the process of gametogenesis.
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diploid
Insects, humans, trees, and other organisms that have two versions (homologs) of each type of chromosome are called ________ " (double- form)
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Life cycle
________ is the sequence of events that occurs over the life of an individual, from fertilization to the production of offspring.
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haploid number n
The ________ indicates the number of distinct types of chromosomes present.
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fundamental part of meiosis
Crossing over is a(n) ________.
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Asexual reproduction
________ is any mechanism of producing offspring that does not involve the production and fusion of gametes.
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Flashcard (51)