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Summary: Cels 191
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Read the summary and the most important questions on cels 191
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Genetics
This is a preview. There are 46 more flashcards available for chapter 09/04/2020
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What happens when non-disjunction occurs in Meiosis 1
Homologous chromosomes do not disjoin,
so they both go together
In 4 daughter cells
two will be n + 1
two will be n-1 -
What does a Y chromosome indicate
You are male -
What is centric fusion/ Robertsonian translocation
When one of the chromosomes has broken off and attached to another -
What will be the karyotypes of someone with familial down syndrome
46 chromosomes
but translocation of chromosome 21 (with 14) -
What is the central dogma of molecular biology
(how information flows in a cell) -
What is a gene
A defined region (sequence) of DNA that produce a type of RNA molecule that has some function -
What are the types of gene sequences
- sequences that regulate the synthesis of RNA
-that produce RNA
-further process RNA -
What does P stand for
Parental genes
medellian genetics -
What is Mendels first law
The law of segregation
genes seperate at meiosis so that the gamete has only one of the 2 alleles from a parent -
What is Mendels second law
Independent assortment
alleles of different genes assort independently during gamete formation
what happens at one does not affect what happens at another gene
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