Peafowl 201: Further Genetics- Colors, Patterns, and More

[Midnightman14]

There are a couple colors where 2 genes are expressed at once. BUT a peach bred to a peach will not produce anything but peaches and with it being sex linked a peach male bred to any female will produce peach hens. You won't get purples and cameos from a peach pairing. The other color like this is the Indigo which is a double expression of bronze and purple.

 

[PhoredaBurds]

How does Hazel work? Does it have its own gene or a combination of two? Is it sex-linked like purple?

 

[Midnightman14]

The indigo and hazel are the same as far as I can read, both are a combo of bronze and purple. If the peach is any indicator I would assume indigo/hazel is also a sex linked color. With the indigo/hazel though there seem to be alot fewer around and I think they're still trying to establish a good genetic base for the color.

 

[Dany12]

.... here they are two different colors !
http://www.jepo-paafugle.com/?paafugl=all

 

[Midnightman14]

Thank you for clearing that up, Most of what I'd read came off of roughwood aviaries' website which I now know is not a good source of info on peas or pheasants.

 

[PhoredaBurds]

Great website @Dany12. I like Legg's website too. Nothing on Hazel there, but looks like decent info.

 

[Midnightman14]

I had heard from a friend regarding the "ivory" mutation that it's another one of those hoax colors. Apparently the bird that supposedly represented the mutation was just a Opal BS bird that had bleached out some color.

 

[casportpony]

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[Rosa moschata]

There are a couple colors where 2 genes are expressed at once. BUT a peach bred to a peach will not produce anything but peaches and with it being sex linked a peach male bred to any female will produce peach hens. You won't get purples and cameos from a peach pairing. The other color like this is the Indigo which is a double expression of bronze and purple.

Peach = Purple and Cameo on the same Z chromosome. For Peach males, that means each Z has both Purple and Cameo on it. Thus all his offspring will inherit a Z with both. But if you took an IB male split to Peach and bred it to any female, you could get Peach, Purple, and Cameo daughters. This is because a split to Peach male has one Z with both Purple and Cameo, and the other Z with neither. During meiosis in spermatogenesis, the two Zs will crossover, and it's possible for the Purple and Cameo to separate ONLY in split males -- since they have one Z with neither mutation -- resulting in some Zs with just Purple and others with just Cameo. Crossover still happens in Peach males, but when it does, the result is still Peach, since each Z already has Purple and Cameo on it.

The indigo and hazel are the same as far as I can read, both are a combo of bronze and purple. If the peach is any indicator I would assume indigo/hazel is also a sex linked color. With the indigo/hazel though there seem to be alot fewer around and I think they're still trying to establish a good genetic base for the color.

Indigo being a combination of Bronze and Purple means that offspring will inherit each color independently -- the two mutations responsible are on different chromosomes, unlike the Peach combination. See Mendel's Law of Independent Assortment, which doesn't apply to Peach because they are linked on the same chromosome. This means that if you bred an Indigo male to an IB female, you'll get Purple split to Bronze females and IB split to Purple and Bronze males. Those offspring will not pass on Indigo as one unit. Male offspring being split to two mutations have just a 25% chance of passing on both to the same offspring. Here's the math:

50% chance of passing Purple, 50% chance of passing non-Purple
50% chance of passing Bronze, 50% chance of passing non-Bronze

In probability, determining the chance of two separate things occurring together means multiplying together the probabilities of each occurring independently.

50% X 50% = 25% chance of passing Purple AND Bronze

If I had a split to Indigo (i.e. split to Bronze and Purple) male, I'd pen it with a Bronze female. Doing so would mean 25% of the daughters would be Indigo. This would be the only way to get Indigo offspring without having a hen with at least one copy of both mutations.

There can't be a "split to Indigo" female. What you CAN have is a Purple split to Bronze female. This would be the only way a female not visually Indigo could produce an Indigo son -- and only if paired with a male with at least one copy each of both Purple and Bronze.

 

[EyeKeyYou]

Peach = Purple and Cameo on the same Z chromosome. For Peach males, that means each Z has both Purple and Cameo on it. Thus all his offspring will inherit a Z with both. But if you took an IB male split to Peach and bred it to any female, you could get Peach, Purple, and Cameo daughters. This is because a split to Peach male has one Z with both Purple and Cameo, and the other Z with neither. During meiosis in spermatogenesis, the two Zs will crossover, and it's possible for the Purple and Cameo to separate ONLY in split males -- since they have one Z with neither mutation -- resulting in some Zs with just Purple and others with just Cameo. Crossover still happens in Peach males, but when it does, the result is still Peach, since each Z already has Purple and Cameo on it.




Indigo being a combination of Bronze and Purple means that offspring will inherit each color independently -- the two mutations responsible are on different chromosomes, unlike the Peach combination. See Mendel's Law of Independent Assortment, which doesn't apply to Peach because they are linked on the same chromosome. This means that if you bred an Indigo male to an IB female, you'll get Purple split to Bronze females and IB split to Purple and Bronze males. Those offspring will not pass on Indigo as one unit. Male offspring being split to two mutations have just a 25% chance of passing on both to the same offspring. Here's the math:


50% chance of passing Purple, 50% chance of passing non-Purple

50% chance of passing Bronze, 50% chance of passing non-Bronze


In probability, determining the chance of two separate things occurring together means multiplying together the probabilities of each occurring independently.


50% X 50% = 25% chance of passing Purple AND Bronze


If I had a split to Indigo (i.e. split to Bronze and Purple) male, I'd pen it with a Bronze female. Doing so would mean 25% of the daughters would be Indigo. This would be the only way to get Indigo offspring without having a hen with at least one copy of both mutations.


There can't be a "split to Indigo" female. What you CAN have is a Purple split to Bronze female. This would be the only way a female not visually Indigo could produce an Indigo son -- and only if paired with a male with at least one copy each of both Purple and Bronze.




 

Just wondering. So if one Z is purple and the other Z cameo which color is expressed. Also can a purple cameo produce a peach?