منابع مشابه
Sex determination methods in guppy (Poecilia reticulat)
Guppy, Poecilia reticulate, is a member of the Poecilidae family. This species is viviparous and one of the most popular ornamental fish in the world, whose phenotype is usually determined during the last ten days of pregnancy. However, most differentiation and development of secondary sexual traits are formed during adolescence, i.e. about 16 weeks after birth. These secondary characteristics ...
متن کاملPrenatal diagnostic methods
Prenatal Diagnosis is the most reliable way of preventing genetic diseases that has been implicated in many countries and has prevented the birth of newborns with different hereditary, congenital and genetic diseases during the past few years. Prenatal diagnosis is actually the use of various diagnostic methods to check the condition of the fetus during pregnancy, because postnatal genetic diso...
متن کاملMethods of Sex Determination in Dioecious Angiospermous Plants
Angiosperms are the most diverse group of land plants which provides fruits, food, seed for cultivation and material for hybridization purpose etc. Approximately 90% of all angiosperm species have hermaphrodite (bisexual) flowers and the remaining, onetenth are either monoecious (male and female flowers are separate but grow in same plant) or dioecious (male and female flower grow on different ...
متن کاملSex determination
struggled for years with parasites that evolve resistance to commonly used drugs. Why should it be any different in animals? Yet as far as we know, no study has ever looked at whether parasites become resistant to the chemicals in the plants that hosts use for protection, though in the Drosophila example referenced above, ethanol did not negatively affect larvae of specialist wasps as strongly ...
متن کاملSex determination
Of all the differences that distinguish people, the most obvious and most intriguing one is their sex. The relationship between males and females has had a profound influence on human civilization, causing wars and societal up heavals, and inspiring countless works of art, music and literature. For as long as humans have both struggled with and enjoyed the existence of the two sexes, they have ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: BMJ
سال: 1960
ISSN: 0959-8138,1468-5833
DOI: 10.1136/bmj.2.5217.1901