Hehehe Flashcards
What is a gene
A section of dna that determines an inherited characteristic
The structure of DNA is called a…
Double helix
What are gametes
Sex cells
What are female and males chromosomes
XY in males XX in females
What is a chromosomes
A long, coiled molecule of DNA that’s carries genetic information in the form of genes
What is a variation
The difference within and between species
Names a characteristics that can be affected by both conditions and inheritance
Weight, mass, height, hair colour, skin colour
Which type of variation can be displayed using a bar chart
Discontinuous
Which type of variation does mass show
Continuous
DMs is made from four letter codes what are they
A T G C
Who discovered the structure of dna
James Watson and Francis crick
The discovery of dna was taken by which female scientists
Rosalind Franklin
A complete set of genes in a nucleus is called a…
Genome
When was dna discovered
1950s
How many chromosomes do humans have in each cell
46 cells
Which is a continuous variation: Weight, blood,group,eye colour
Weight
Which is a discontinuous variation: height, foot, length or blood group
Blood group
What is an allele
Different forms of the same gene
