Bioligy B1

23 pairs, 46 total.

• Skin.
• Hair.
• Blood.
• Cytoplasm in our cells.

The actual gene (e.g. Aa).

The characteristic the gene creates (e.g. blue eyes).

Because they will have a combination of both their parents genes and therefore a combination of their characteristics.

Different versions of the same gene (e.g. A or a).

XY

**

Two alleles which are the same (e.g. AA).

Two alleles which are different (e.g. Aa).

Dominant allele's characteristic.

Recessive allele's characteristic.

23 single chromosones, one from each human pair.

When something is negative/false but thought to be positive/true.

When something is positive/true but thought to be negative/false.

Non-sexual reproduction.

Clones.

It divides into two parts.

A strawberry plant.

Cystic Fibrosis.

• Thick sticky mucus in air passages, gut and pancreas.
• Breathing difficulty.
• Chest infections.
• Difficulty in digesting food.

• Memory loss.
• Clumsiness.
• Mood swings.
• Lack of concentration.