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history-of-psychology
history-of-psychology

... • autosome Any chromosome that is not a sex chromosome. • behavioral genetics The field of study that examines the role of genetics in animal (including human) behavior; often involves the nature-versus-nurture debate. • chromosome A structure in the cell nucleus that contains DNA, histone protein, ...
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Pedigree Practice Problems
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Interacting Gene Clusters and the Evolution of the Vertebrate
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AA - rfisd
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... MAL61promoter-lacZ reporter using the standard ␤-galactosidase plate assay and MAL12 expression by assaying maltase activity levels in galactose-grown cells. Cloning of wild-type alleles of a mutant gene in strains CM-31 and CM-33: Constitutive mutants CM-31 and CM-33 were chosen as representatives ...
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... 3. Perform a genetic cross of C. elegans and predict the outcomes. Introduction: This laboratory investigation connects an organism’s genotype to its phenotype. Using the information provided in Tables 1 and 2, most populations of worms can be accurately identified using a microscope and an eyelash ...
Plant centromeres: structure and control Eric J Richards and R Kelly
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... chromosome movement [2]. Inside of the fibrous corona is an outer plate which appears to interact with microtubules, a non-staining spacer region, and a diffuse inner plate which may contain centromeric DNA. In contrast, plant kinetochores are ball-shaped structures that lack defined ultrastructural ...
Lesson Plan - Colorado FFA
Lesson Plan - Colorado FFA

... dominant gene from on parent unites with the gamete carrying the dominant gene from the other parent, the offspring produced are homozygous dominant. If the gamete carrying the dominant gene from one parent unites with the gamete carrying the recessive gene form the other parent, the offspring are ...
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X-inactivation



X-inactivation (also called lyonization) is a process by which one of the two copies of the X chromosome present in female mammals is inactivated. The inactive X chromosome is silenced by its being packaged in such a way that it has a transcriptionally inactive structure called heterochromatin. As nearly all female mammals have two X chromosomes, X-inactivation prevents them from having twice as many X chromosome gene products as males, who only possess a single copy of the X chromosome (see dosage compensation). The choice of which X chromosome will be inactivated is random in placental mammals such as humans, but once an X chromosome is inactivated it will remain inactive throughout the lifetime of the cell and its descendants in the organism. Unlike the random X-inactivation in placental mammals, inactivation in marsupials applies exclusively to the paternally derived X chromosome.
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