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!
Explain the pair of chromosomes and Sex Chromosomes?
Morgan also noticed that one pair of chromosomes is different in male and female flies, one of the male chromosomes being shorter and hook-shaped. He called the larger chromosomes X-chromosomes, and the shorter, hooked, homologous chromosomes Y-chromosomes. He suggested that the fly's sex is determined by whether the homologous pair is XX, for females, or XY, for males. Exceptions exist in birds, where the pattern is reversed--females are XY and males are XX. In some insects, where males are XO and females are XX.
In meiosis in most organisms, since males are XY, male gametes receive either an X or a Y chromosome. Since female gametes can receive only X sex chromosomes, when male and female gametes fuse, the probability is that half of the offspring will be male, and half of the offspring will be female.
Autosomes, or non-sex chromosomes, are designated by the letter A, and the letter O is used when the chromosome is missing. Humans have 22 pairs of autosomes and one pair of sex chromosomes.
How are the male gametophytes and the male gametes formed in angiosperms? In the anthers of every stamen there are pollen sacs. Within the pollen sacs there are microspore moth
Q. Wound Botulism? It is the rarest form of botulism. The illness results when C. botulinum by itself or with other microorganisms infects a wound and produces toxins, which re
discovery of two light phase in photosynthesis
Explain about the Dysphagia? Dysphagia is the inability to swallow or difficulty in swallowing. It is a common problem in those with neurological disorders and can occur in any
Food Applications of alginate One of the most unusual properties of the alginates has been the ability of soluble alginate salts to produce attractive, edible gels or jellies.
Domestication - Wildlife It means that man has taken under his direct care the living beings which are useful to him. Through extensive breeding programmes, he has modified th
Define the elements that affects the Fitness? Fitness varies from a person to person. It is influenced by age, sex, heredity, personal habits, exercise and eating practices. Th
Deciduous Senescence - Senescence Only the leaves senesce as in many trees. The senescence of leaves, or abscission occurs when at the base of a leaf a layer of cells is laid
Explain the Pour Plate Method Isolated colonies can also be obtained by pour plate method. The method involves mixing of small volume of microbial suspension with molten nutrie
The bonding geometry of C,O,N is determined by- Select one: a. The number of electrons in their outer energy level b. SP3 hybridization of orbitals in the valence shell
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: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd