Q3 of 31 Page 1

In case of an infertile couple, the male partner can inseminate normally but the mobility of sperms is below 40 percent. Which kind of ART is suitable in this situation to form an embryo in the laboratory conditions, without involving a donor?

Intra Cytoplasmic Sperm Injection can be the suitable assisted reproductive technology (ART). This method is suitable for those males who suffer from low sperm count or whose sperms are not healthy. This method is most suitable because fertilization is done with just one sperm.


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A tissue, of a tobacco plant, infected with TMV was used to obtain a new plant. Identify the technique used and reason out the possibility of obtaining a new healthy plant.

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Write the two components of the first artificial recombinant DNA molecule constructed by Cohen and Boyer.

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A cross was carried out between two pea plants showing the contrasting traits of height of the plant. The result of the cross showed 50% of parental characters. Name the type of cross.