Genes Flashcards
1
Q
how many copies of each chromosome are there in body cells.
A
two
2
Q
what is a gene
A
a gene is a short piece of DNA at a particular point on a chromosome.
3
Q
what is a allele
A
different forms of the same gene, that produce different variations of the characteristic
4
Q
what is homozygous
A
same alleles on both chromosomes.
5
Q
what does genotype show
A
genotype shows the alleles in the individual
6
Q
what does phenotype show
A
the characteristic that are produced, including what the individual looks like.
7
Q
when will the effect of the dominant allele show
A
it will show when at least one copy is present in the genotype
8
Q
when will the effect of the recessive allele show
A
it will only show when two copies are present in the genotype
9
Q
what is heterozygous
A
different alleles of the same gene
