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Paternal age

paternal age

age of the father.

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Re: Chromatin

Before replication there were 23 pairs of molecules, 23 of maternal origin and 23 of paternal origin, plus the maternally-contributed mitochondrial chromosome (which I'll ignore for the rest of this post). Counting chromosomal centromeres, there are 46 centromeres ...

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by jonmoulton
Thu Sep 04, 2014 3:04 pm
Forum: Genetics
Topic: Chromatin
Replies: 2
Views: 947

Turner Syndrome and X chromosomes

... us that one X chromosome in women is always bundled up, and we have some cells with the maternal x chromosome bunched up, and the others have the paternal x chromosome bunched up. Essentially, only one is in use at any given time, right? I asked how this affects females with Turner Syndrome and ...

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by ofekistit
Sun Nov 17, 2013 3:33 pm
Forum: Human Biology
Topic: Turner Syndrome and X chromosomes
Replies: 1
Views: 969

Re: What causes dominance between alleles?

... (and a fairly common one). When you have two healthy alleles for a particular gene, one copy on a maternal and one on the corresponding paternal chromosome (and excluding the sex chromosomes), then usually both copies are making transcripts. Maternal - good protein Paternal - good protein ...

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by jonmoulton
Fri Aug 09, 2013 7:45 pm
Forum: Genetics
Topic: What causes dominance between alleles?
Replies: 2
Views: 3230

X chromosome inactivation

... knowledge this is not considered as "X chromosome inactivation". In mammals, X chromosome inactivation is random and can happen on the paternal or on the maternal X chromosome. hope it helps!

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by cathbr
Thu Jul 18, 2013 3:56 pm
Forum: Molecular Biology
Topic: X chromosome inactivation
Replies: 1
Views: 1623

Recombination vs. Recombinants

1. You have a tetrad in crossover (say AB maternal and CD paternal): ------------A---------/---------B--------- ------------A---------/---------B--------- ------------C---------/---------D--------- ------------C---------/---------D--------- Crossover ...

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by Cat
Thu Sep 20, 2012 6:18 pm
Forum: Genetics
Topic: Recombination vs. Recombinants
Replies: 1
Views: 1468
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