Topic 17 Inheritance

The two main causes of variation within a species are:

• Genetics

• Diet

• Environment

• Personality

Some characteristics are caused by both genetics and environmental influences, select all those that only genetic.

• Weight

• Scar

• Sporting ability

• Eye colour

• Blood group

Based on the complementary base pairing rules what would be the correct base pairing of the following strand: AGC TGA

• TGT ACA

• AAT CGT

• TCG ACT

• ACT CAT

Where is DNA found?

• Nucleus

• Cell Wall

• Cell Membrane

• Anywhere in the cell.

Where is DNA found?

• Nucleus

• Cell Wall

• Cell Membrane

• Anywhere in the cell.

How many chromosomes are in a diploid cell?

• 50

• 46

• 20

• 16

Which of these would be correct for an organism that was described as being homozygous recessive.

• bb

• BB

• Bb

• Bbb

If brown eyes are dominant (E) and green eyes recessive (e), what colour eyes would a cat have if they had the genotype, Ee?

• Brown

• Green

• Blue

What process takes place to ensure only half the number of chromosomes (23) are found in gametes?

• Mitosis

• Meiosis

• Fertilisation

• Phagocytosis

Cells (Eg: gametes) with only half the number of chromosomes are known as ____________