CCEA GCSE Biology variation, reproduction and applied genetics overview quiz quiz

Human height

Body mass

Blood group

Hand span

Bar chart

Pie chart

Histogram

Punnett square

A change in the environment

A random change in the base sequence of DNA

The loss of a chromosome during mitosis

A type of selective breeding

Reproduction, variation, survival, competition

Variation, competition, survival of the best adapted, reproduction and passing on alleles

Survival, mutation, variation, extinction

Competition, mutation only, no change

The antibiotic teaches the bacteria to resist

Resistant bacteria (from mutation) survive, reproduce and pass on the resistance allele

All bacteria change at once

The bacteria stop reproducing

They show all species appeared at once

Older rocks contain simpler organisms and younger rocks more complex ones, showing change over time

They prove the environment never changes

They contain living organisms

Oestrogen

Progesterone

LH

FSH

It breaks down the uterus lining

It builds up the uterus lining and triggers ovulation

It produces sperm

It blocks all other hormones

It thickens the uterus lining

Its hormones stop FSH, so no egg matures or is released

It increases ovulation

It removes the ovaries

Transferring a gene from one organism to another

Choosing organisms with useful features to breed over many generations

Letting the environment select survivors

Cloning identical organisms

It increases variation too much

It reduces variation, leaving the population vulnerable to disease

It always produces clones

It transfers genes between species

An enzyme that cuts DNA

A vector that carries the gene into the host cell

The protein that is made

A type of mutation

To make them resistant to antibiotics

So they read the gene and produce human insulin on a large scale

To clone the bacteria

To remove their plasmids

An organism with new mutations

A genetically identical copy of an organism

An organism bred from two different species

A gene transferred by a vector