The chi-square test is used to estimate how likely the observations that are made would be, by considering the assumption of the null hypothesis as true.

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#Id: 9479

#Unit 4. Cell Communication and Cell Signaling

SOCS-1, binds to the critical phosphotyrosine in the activation loop of an activated JAK2 kinase, inhibiting its catalytic activity

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#Id: 9546

#Unit 11. Evolution and Behavior

In the most famous example of Lamarck’s theory, giraffes must have stretched their necks to reach foliage above them, and so their necks were lengthened

The longer necks were inherited, and over the course of generations, this process was repeated, and their necks got longer and longer. 

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#Id: 6973

#Unit 8. Inheritance Biology

SEX-CHROMOSOME ANEUPLOIDIES 

The most common aneuploidies seen in living humans.

Aneuploidy of the human sex chromosomes is better tolerated than aneuploidy of autosomes.

AUTOSOMAL ANEUPLOIDIES

There is no mechanism of dosage compensation for autosomes.

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#Id: 9553

#Unit 11. Evolution and Behavior

Natural selection was Darwin’s brilliant hypothesis, that accounts for adaptations, features that appear “designed” to fit organisms to their environment.

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#Id: 1024

#Unit 5. Developmental Biology

Intermediate levels of BMP effect the formation of the neural crest cells.