Genetics Flashcards
What is DNA?
is the molecule
in the nucleus that carries our genetic code.
What is a Chromosome?
A chromosome is a length of DNA.
How do chromosomes work
- Each gene codes for a specific protein –
which give us our unique characteristics.
What is a gene?
Genes are small sections of
chromosomes (DNA) that code for a
particular characteristic. (protein)
How do genes work?
Genes contain a code that code for a particular sequence (chain) of amino acids.
What is a allele?
An allele is a different/alternate form of a gene.
What is a Homozygous alleles
They are are two alleles that are the same.
What is Heterozygous alleles
They are two alleles that are different
What is a dominant alleles?
They are always expressed if they are prese
What are
Recessive alleles
What is a homozygous alle?
It’s like If an individual has 2 alleles the same (e.g. BB, tt etc)
What are heterozygous alleles?
It’s like If an individual has 2 different alleles (e.g. Bb, Tt etc)
What allele ss mean?
Straight hair
What allele Ww mean?
Normal weight
What allele EE mean?
Attached earlobes
What allele Bb mean?
Brown eyes
What allele ss mean?
Curly hair
What allele TT mean?
Tall
What allele Ss mean?
Straight hair
What allele pp mean?
White flower
What allele Tt mean?
Tall
What allele Rr mean?
Roll tongue
What allele CC mean?
Normal vision
What allele WW mean?
Normal weight
What allele pp mean?
White flowers
What allele cc mean?
Colour blind
What allele Ee mean?
Attached earlobes
What allele PP mean?
Purple flower
What is the relationship with the allele on a homozygous
Alleles are same
What is the relationship with the allele on a heterozygous
Alleles are different
What is asexual reproduction
Asexual reproduction is a method of reproducing without
sex and therefore with out sex cells (gametes).
What is a cell division
Unicellular organisms, like bacteria, cannot increase in size indefinately because they are made of only one cell which performs all the functions necessary for life.
The genome of an organism is modified by introducing a
Gene from another organism
