Prior to 1920, US battleships WERE designated with just the letter "B." However, after WW1 (1918), newer naval ships began to enter the USN inventory, different types of vessels...submarine tenders, Lighter than air support ships (for the Blimps, aka Air Ships), etc. These types of vessels couldn't be designated with just one letter, they required two, sometimes three letters. Consequently, in 1920, the USN designated the B (Battleships) and D (Destroyers) with two letters for uniformity sake; BB & DD. When performing paper work, it cut down on errors, and was easier to read, type, and organize.
battleship
A heterozygote means different-joineda homozygote means same-joinedso lets look at this cross. (parent genotype are Bold and italics)---B----bB | BB | Bb |--------------------B | BB | Bb |We see that 2 "joined" zygotes are BB and 2 are BbSO by definition 2 combinations produce a heterozygote "Bb"and 2 produce a homozygote "BB"
B. HETEROZYGOUS??
bb Brown eye gene = B Blue eye gene = b Each person has two copies of the eye color gene in their genome, one inherited from each parent. Now if both parents only carry the gene for brown eyes, BB and BB, then their child will receive one B from each parent, ending up as BB. The same works for blue eyes, if that's the only gene both parents carry, bb and bb. Each parents gives on b to the child, who ends up as bb. If you have one parent who only has the gene for brown eyes, BB, and one parent who only has the gene for blue eyes, bb, then all the children will have brown eyes. Example: One parent gives a B, the other gives a b. Bb = brown eyes. Here's why: When you have two alleles (coding sequences) from genes that are at odds with each other, one version will override the the other. When dealing with eye color, B always dominates b. But these children now carry the b gene in them, and could pass it down to their own children. Some of them, depending on the other parent, could end up with blue eyes. If one parent is Bb, and the other is bb, then each time they have a child, there is a 50% chance it will have blue eyes. Example: First parent is Bb, second parent is bb, then their children will end up as either Bb, bb, Bb, bb. If both parents carry the genes for brown eyes and blue eyes, then each time they have a child, there is a 25% chance it will have blue eyes. Example: First parent is Bb, second parent is Bb, then their children will end up as either BB, Bb, Bb, bb.
Brown eye gene = B Blue eye gene = b Each person has two copies of the eye color gene in their genome, one inherited from each parent. Now if both parents only carry the gene for brown eyes, BB and BB, then their child will receive one B from each parent, ending up as BB. The same works for blue eyes, if that's the only gene both parents carry, bb and bb. Each parents gives on b to the child, who ends up as bb. If you have one parent who only has the gene for brown eyes, BB, and one parent who only has the gene for blue eyes, bb, then all the children will have brown eyes. Example: One parent gives a B, the other gives a b. Bb = brown eyes. Here's why: When you have two alleles (coding sequences) from genes that are at odds with each other, one version will override the the other. When dealing with eye color, B always dominates b. But these children now carry the b gene in them, and could pass it down to their own children. Some of them, depending on the other parent, could end up with blue eyes. If one parent is Bb, and the other is bb, then each time they have a child, there is a 50% chance it will have blue eyes. Example: First parent is Bb, second parent is bb, then their children will end up as either Bb, bb, Bb, bb. If both parents carry the genes for brown eyes and blue eyes, then each time they have a child, there is a 25% chance it will have blue eyes. Example: First parent is Bb, second parent is Bb, then their children will end up as either BB, Bb, Bb, bb.
BB-63, the Battleship Missouri. BB-39, the Battleship Arizona.
Prior to 1920, US battleships were designated B-1, B-2 etc. in 1920 they were re-designated as BB-1, BB-2, etc. to maintain consistency with the numbering systems for the new variety of naval vessels entering service; such as the DE, or CV's. The first letter meant Battleship; the second letter was simply for uniformity. This also applied to the US destroyers...DD's.
Big Black Its a black man
BB B BB B BB EFG BB B BB E GG F D B BB B BB B BB EFG EG B'A'GF EGE ' Means high notes.
BB B BB B BB EFG BB B BB E GG F D B BB B BB B BB EFG EG B'A'GF EGE ' Means high notes.
Just B's
1st part Bb G# Bb D# B Bb B Bb G# B Bb B D# G# F# G# F# F G# F# 2nd Part Bb G# Bb D# B Bb B Bb G# B Bb B D# G# F# G# F# F G# F# F F# G# F# G# Bb Bb G# F# F D# B Bb Bb B Bb G# Bb
Recorder: For One And AllAA BB AA GG AA BB A B A AA BB AA GG AA BB A B A BB BB AA G G BB B A A G A BB BB AA G G BB B A A G A AA BB AA GG AA BB A B A AA BB AA GG AA BB A B A
Military Model. Understandably this can cause some confusion as there are 2 "M"s present; but the same technique applies to the US Navy when they designated their warships: BB (Battleship), DD (Destroyers); the second "B" and the second "D" mean nothing, they are there simply for uniformity. Like writing 02 instead of just 2.
Standardization and uniformity: When adding 1 plus 10 it is easier to add (on paper) 01 plus 10. Examples: 1. DE=Destroyer Escort 2. DD=Destroyer, the second D is for standardization 3. CA=Cruiser Armored 4. BB=Battleship, the second B is for standardization
1st part Bb G# Bb D# B Bb B Bb G# B Bb B D# G# F# G# F# F G# F# 2nd Part Bb G# Bb D# B Bb B Bb G# B Bb B D# G# F# G# F# F G# F# F F# G# F# G# Bb Bb G# F# F D# B Bb Bb B Bb G# Bb reapeat
D-C-B D-C-B D-D-D-D C-C-C-C D-C-B it just takes some practice good luck!