Cloning

Cloning

A Advantages and Disadvantages of cloning

A advantages

• High value animals (such as cows with high yield of milk) can be cloned in large numbers easily

• It is a way of preserving endangered species

• Genetically modified animals can be quickly reproduce

• Ables you to achieve desirable characteristics, such as fruiting and resistance

• Help the spread of plants

D Disadvantages

• The welfare of high value animals is not always thought of

• Excessive genetic uniformity in a species makes it unlikely to be able to cope with changes in the environment

• Can be expensive

• The health of the animals long term is unknown and cloning can induce premature ageing

• Future generations may not ever see wild trees, they will only ever know the clone

• There is no genetic variety except for mutations

Reproductive Cloning

This creates a whole new individual which is genetically identical. It happens by using a diploid nucleus from an adult egg and introducing it to an enucleated egg. The diploid cell is shocked and implanted into a host uterus to grow. However, the disadvantage with this method is that the nucleus comes from an adult cell, where the chromosomes are smaller (the telomeres are shorter) than those from a embryo. So they are shorter in the zygote…