Both curly and straight are common in celtic people. English people aren't just germanic, they are mostly from kelt ancestry. People with red hair are more likely to have wavy or curly hair. Celtic people are more likely to have red hair.
The story of human migration and evolution is written in hair DNA. In sub-Saharan Africa, genes favour tight, curly hair. But in east Asia, mutations have led to straighter, thicker hair. In Europe, other mutations brought wavy and straw-coloured hair.
Curly hair is not certain to a race or ethnicity, it appears all over the world in many forms. White, brown, black and everything inbetween! There is also a scale on which curly hair is classified (2a-4c).
From genotyping results, European hair shape varies mostly between wavy (46.6%) and straight (40.7%), with some curly hair (12.7%) (n = 2138) [10]. The same study showed that Asian (East and West) hair shape is also mostly straight (46.7%) or wavy (41.3%), with some curly hair (12%) (n = 92).
Curly hair is often associated with a fun-loving, warm hearted and outgoing personality. If you have curly hair you are perceived as being courageous, outspoken, and spontaneous. You are probably someone who likes to challenge perceptions and norms. You celebrate your uniqueness and value your roots.
Caucasian hair can be smooth, wavy or curly.
Yes, only 11% of the population have curly hair.
Curly hair is considered a “dominant” gene trait. Straight hair is considered “recessive.” To put that in simple terms, that means that if one parent gives you a curly-haired gene and the other parent gives you a straight-haired gene, you'll be born with curly hair.
Less than 20% of people have naturally curly hair. The percentage gets even smaller when you consider the scores of guys out there who don't embrace their curls.
Sarah Medland, approximately 17% of Italians have curly hair. Overall, 45% of European people have straight hair, 40% have wavy, and 15% have curly hair. Therefore, Italians are slightly above the European curly hair average. Italian genes have adapted to both the northern and southern climates of Italy.
While there are people with natural curls it is certainly not the majority. Every country in Northern Europe has a few curly heads amoungst the straight, Ireland is in no way unusual that way.
Curly hair is dominant, so someone is more likely to have curly or wavy hair if at least one of their parents does. Recent research points to trichohyalin, a protein in hair follicles, as having primary influence over hair curl. However, there are many genes contributing to hair curliness, most of them unknown.
Lots of traits are statistically rare: Left-handedness (just 10 percent of the population!), curly hair (11 percent!), and blond hair (4 percent!), to name a few.
However, in some climates certain hair types might be advantageous, for example very thick curly hair is a better protection against strong sun. In other areas where the sun is not so strong hair type would be irrelevant to survival and reproduction.
No, curly hair is found in every European country and very common in Dutch, Irish, English, Welsh, Scottish, etc decent. These people don't have African admixtures. Curly hair is also not based on one specific gene. In Caucasians, it results from a different gene.
So for hair type, CC gives curly, Cs gives wavy and ss gives straight hair. Back to your specific situation. As you can probably tell, the couple you describe could only have wavy haired kids. That is because the curly headed parents, CC, can only contribute a C gene and the straight haired parent, only an s gene.
Coily Curls
The last, but most rare type of curl is the coily curl. This curl type is similar to that of an afro and when observed carefully, looks like the angular letter 'Z'. These curls require the most amount of moisture, as the hair type is much thicker than the other curl types.
It has been long established that curly hair is a dominant trait in Caucasians and straight hair is recessive.
So, while curly-haired parents tend to have curly-haired kids, there's no guarantee it will happen. Because many different genes are involved, even a curly-haired parent can have—and pass along—straight-hair gene variations.
The probability of the parents having a child with curly hair is 3/4, as shown in the Punnett square below: A Punnett square for the cross of two heterozygous parents is shown.
3 (A, B, C) Curls: Type 3 curls are amongst the most common curl types. This curl type is the happy medium between type 2 and type 4 curls. It is flexible but thick- meaning it can be a hit or miss when using different products to style this hair type.
Evolutionary trait
It is known that 45% of European people have straight hair, 40% have wavy hair and 15% have curly hair. They had previously established the heritability of curly hair, finding there was as much as a 90% chance of it being an inherited trait.
Type 4C. 4C is the kinkiest, coiliest hair type there is. Sometimes the zigzag curl pattern is so dense and fine that it may be hard to see individual strands without stretching each strand out. However, 4C hair is also super versatile and can be worn in so many different natural hairstyles.
No, curly hair is found in every European country and very common in Dutch, Irish, English, Welsh, Scottish, etc decent. These people don't have African admixtures. Curly hair is also not based on one specific gene. In Caucasians, it results from a different gene.
Caucasian hair usually appears thicker since it is more difficult to see through the scalp than other ethnic hair types. However, Asian hair is the thickest and coarsest hair of any ethnic group.