Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Casein is the main protein in milk. There are three types of casein, one of which is beta casein. Beta casein comes in two main variants called A1 and A2. The order of amino acids in each variant is identical except for the 67th amino acid in the chain (see diagram below). In A1 beta casein, the 67th amino acid is histidine (His), while in A2 beta casein it is proline (Pro). Scientists believe that A2 was the original form of beta casein
Cows' milk that contains A1 beta casein is called A1 milk, while milk that contains A2 beta casein is called A2 milk. In New Zealand, 30% - 40% of dairy cows produce pure A2 milk. The rest produce either pure A1 milk or milk that is a mixture of both A1 and A2. From these figures, it can be calculated that the current frequency of the A1 allele is around 37%.
There are several breeds of dairy cow. Each breed has a combination of desirable characteristics that has been obtained through selective breeding. For example, the proportion of fat or protein in the milk, the amount of milk produced by the females, the breeding success of the females. Different breeds produce different types of milk in relation to beta casein. Some breeds produce mainly A1 milk, while other breeds produce mainly A2 milk. Recent research has suggested that there may be health benefits to humans in drinking A2 milk, as opposed to drinking A1 milk.
Discuss the genetics involved in the inheritance of the alleles responsible for the A1 and A2 casein proteins in the milk of dairy cows. In your discussion, consider the following:
Q. Can high blood pressure causes the cardiovascular disease? Hypertension or high blood pressure: It is also one of the risk factors of cardiovascular disease and is frequentl
Q. Rigid fixation to evaluate osseointegration? Is a clinical term that means absence of observed mobility. Rigid fixation indicates the absence of clinical mobility of an impl
What is plaque? Plaque is a film over the teeth and having of saliva, mucus, bacteria and the substances they produce. It may also have mineral salts of calcium and magnesium.
Neuropsychological understanding of behavioural deficits Behaviour is an outcome of the interaction of the brain with the environment. A composite of multiple psychological pro
State the concept of type locus interaction Some of the major contributions included the concept of type locus interaction, the analysis of quantitative as opposed to qualitati
How Age factors Affecting the calcium absorption? Age is another factor which influences the absorption of calcium. Fractional absorption of calcium is highest in infancy i.e.,
Q. What are carbohydrates? Carbohydrates are important organic compounds widely distributed in animals and plants. Plants can synthesize carbohydrates by the process of photos
What is heterospermy?also give its significance?
Explain how early RNA molecules might have been able to respond to natural selection. Every RNA molecule might have competed with slightly dissimilar RNA molecules for nucleoti
Explain the Objectives of Congenital Heart Disease ? After reading this unit, you should be able to: 1 Comprehenced the epidemiologic significance of congenital heart disease (
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd