Short Answer TypeA geneticist interested in studying variations and patterns of inheritance in living beings prefers to choose organisms for experiments with shorter life cycle. Provide a reason.
State a reason for the increased population of dark coloured moths coinciding with the loss of lichens (on tree barks) during industrialization period in England.
Indiscriminate diagnostic practices using X-rays etc., should be avoided. Give one reason.
After a brief medical examination a healthy couple came to know that both of them are unable to produce functional gametes and should look for an ‘ART’ (Assisted Reproductive Technique). Name the ‘ART’ and the procedure involved that you can suggest to them to help them bear a child.
The ART procedure used to help the couple is ZIFT, that is, zygote intrafallopian transfer. In this method, the sperm is collected from the donor male and the ovum from donor female. The sperm and the ovum are fused in the laboratory and developed till 8-cell stage. The 8 cell zygote is then transferred into the fallopian tubes of the mother for further development.
Mention a product of human welfare obtained with the help of each one of the following microbes:
(a) LAB
(b) Saccharomyces cerevisiae
(c) Propionibacterium sharmanii
(d) Aspergillus niger
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