B1- Variation, reproduction and new techology

Question 1

Suggest which humans could be described as natural clones.

Answer 1

Identical twins are natural clones

Question 2

Plant clones are genetically identical. Why do some clones look different?

Answer 2

Clones have the same genetic material but during development the organism may be changed due to environmental factors e.g. Amount of light or nutrients.

Question 3

What is meant by a host animal?

Answer 3

The host animal is the one in which a transplanted embryo development

Question 4

What is done to the fused cell to start off the process of cell division in adult cell cloning?

Answer 4

A electric shock is applied to the cell

Question 5

Why are you similar to both your parent but not identical to either of them?

Answer 5

Offspring inherit genes from both parents. Different combinations of genes lead to the appearance of different physical characteristics.

Question 6

In what way is embryo transplants similar to what happens when identical twins are formed?

Answer 6

A single embryo is formed which then splits into two in identical twins. In cloning the embryo is split into several groups of cells.

Question 7

How is genetic information passed from parent to offspring?

Answer 7

In the chromosomes

Question 8

How are calf embryos cloned?

Answer 8

After sexual reproduction, a single embryo produced. Before the cells specialise the embryo is spilt into several group of cells. Each group is transplanted into a different host mother. The calves born are all genetically identical