Can the tongue be curled Boutique, can your tongue be rolled up both sides rolled in !

2) Parents have double eyelids, while daughters have single eyelids, this phenomenon is called; The tongue of the parents can curl, and the tongue of the daughter can also curl, this phenomenon is called . 3) If the double eyelid gene a, then the genetic makeup of the father and daughter is , Darwin's well-being sheep A visually normal female (x b x b) and a colorblind male (x b y) are married, are there any of their offspring with color blindness? Wheat grains on the same ear are planted in fertile soil and poor soil, respectively, and the former produces more wheat grains than the latter.

Genetic variation: Genetic material is determined and can be passed on to future generations. Variations that are not inherited:

Variations caused by environmental influences, where the genetic material has not changed and therefore cannot be passed on to future generations. Favorable Variation Unfavorable Variation Human Beings Apply the Principle of Genetic Variation to Breed New Varieties Through crossing, low-yield lodging resistant wheat passed lodging resistance genes to high-yielding non-lodging resistant wheat, and lodging resistance genes were combined with high-yield genes. High-yielding lodging wheat is crossed with low-yielding lodging resistant wheat to produce high-yielding lodging resistant wheat This is due to:

Cows with different milk yields This is due to: Cows with high milk production can be selected through manual selection (containing genetic material that controls high milk production), and through breeding, the offspring will also have various variations, and then select from them to breed, and after several generations, the cows will not only be able to maintain high milk production but even have a tendency to increase. Choose from cows with different yields to breed high-yielding cows This is due to:

Space pepper is a variety that is bred by genetic changes under space conditions. What is the significance of biological evolution when the seeds of the common bell pepper are sown on the satellite and selected to be bred into the space pepper 1 mutation? 2 What is the application value of variation in agricultural production?

1 The significance of mutation in biological evolution: The emergence of new types of organisms provides the raw materials for biological evolution. 2 The significance of variation in agricultural production:

Cultivate excellent crops, livestock and poultry breeds for the benefit of mankind. 1 Random sampling. 2 Samples should be in sufficient quantity, it is recommended not less than 30 capsules.

3 It is recommended to measure the length of the long axis of the seed, the length in millimeters, rounded off, e.g. millimeters, which can be written as 12 millimeters. 1. The types and names of common infectious diseases in Shunde, the transmission of these diseases before and after the founding of New China and in recent years. 2. The basic situation of the new infectious diseases that have never been seen in the history of Shunde in recent years, including the causes of the disease, the spread of the epidemic, and the harm caused.

3. The source of infection, transmission route and susceptible population of common infectious diseases (taking one as an example) in Shunde. 4. Measures to prevent infectious diseases in Shunde.

This is a common individual difference in human genetics, just like some people are born with double eyelids and others are not.

Tongue curling and not being able to roll the tongue are genetically determined, and this has little effect on an individual's growth and social interaction.

How do you know that most people can roll their tongues.

It is related to genes, the gene that controls tongue curling is located in the autosome, and the non-tongue curling gene is dominant. The tongue-curling gene is not completely dominant.

Yes, it has to do with your genes. You don't think your tongue can't roll up and get sick, do you?!

Trouble, thanks!