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Jun
13
answered Are there beneficial genetic mutations identified by consumer DNA genotyping?
Feb
25
comment Are there examples of encryption in nature?
@JackAidley Well if you want to be pedantic they can be examples of Cryptography rather than Encryption, but its the closest example in Biology I can think of.
Feb
25
comment Are there examples of encryption in nature?
@JackAidley modern encryption is used for signing/verifying messages as much as encrypting/decrypting them. The RM system is a form of signing/verifying.
Feb
20
answered Are there examples of encryption in nature?
Feb
13
comment What is a Mitochondrial Eve and Y-chromosomal Adam
Just to note that you don't always get the mitochondria from the mother, sometimes you get some from the father too (but this is very rare.) This doesn't really change anything other than the "unbroken line of mothers" aspect.
Feb
12
comment Is there an “Adam and Eve” for each new trait during (not just human) evolution?
If you a new mutation which is recessive, although there is one progenitor, the phenotype might not be realised until many several generations later when the first homozygous offspring is born. In this case you don't really have an Adam and Eve. You could even have the first exhibitions of the phenotype occur simultaneously in different populations.
Jan
29
revised How can a three-base codon evolve from a two-base codon?
added 212 characters in body
Jan
29
answered How can a three-base codon evolve from a two-base codon?
Jan
8
answered Breathing water vapour
Jan
2
comment Do T-cells express MHC molecules?
Antigen-presenting cells include dendritic cells, and B-cells, but there are more: en.wikipedia.org/wiki/Antigen_presenting_cells
Dec
11
comment Does the DNA sequence of a butterfly match that of the caterpillar it used to be?
@AlanBoyd I imagine the germline cells' DNS remains the same?
Dec
11
awarded  Critic
Dec
11
comment Does the DNA sequence of a butterfly match that of the caterpillar it used to be?
Sometimes a caterpillar turns into a wasp rather than a butterfly. But then its DNA Is very different! (And it doesn't go on to make more catterpillars)
Dec
6
comment Insulin and monoclonal antibody production
See en.wikipedia.org/wiki/Glycosylation
Aug
31
awarded  Supporter
Aug
24
awarded  Teacher
Aug
24
answered Has there been any observation of species adapting the evolution process?
Aug
24
awarded  Editor
Aug
24
revised Why do DNA and RNA have the functions they have?
deleted 1 characters in body
Aug
24
answered Why do DNA and RNA have the functions they have?