Inheritance Assessment

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Slide 1

Genetics and inheritance

Aim:

To recall the important terms that relate to genetics and inheritance (KS4)

Describe the basic structure of DNA

Slide 2

In your own words, explain the following terms

Chromosome

Gene

Features

Gametes

Zygote

Diploid

Allele

Homozygous

Heterozygous

Selective breeding

Genetic engineering

Meiosis

Mitosis

Sexual reproduction

Asexual reproduction

Mutations

Dominant

Recessive

Slide 3

Chromosome

The instructions that tell cells what we look like are carried in these. There are 23 pairs of them in a normal human cell.

Slide 4

Genes

These are the units which make up chromosomes. Responsible for inheritance of specific characteristics

Slide 5

Features

These are things like eye colour,

skin colour and hair colour.

They are controlled by genes.

Slide 6

Gametes

Sperm and egg cells are both this type of cell.

Contain half the amount of DNA of normal diploid cells

Slide 7

Zygote

When a sperm and egg cell

fuse together,

they produce this.

Slide 8

Diploid

We use this word to describe

cells which contain the full

complement of genetic

material. In humans this would be

46 chromosomes (23 pairs)

Slide 9

Alleles

The different versions of genes

Slide 10

Homozygous

Alleles of a given gene are identical (can be either dominant or recessive

Slide 11

Heterozygous

Alleles of a given gene are not identical

Slide 12

Selective Breeding

Where plants and animals with useful or desired traits

are bred together

to produce offspring with those desired traits

Slide 13

Genetic engineering