Question | Answer |
what is a nucleus? | where the genetic information/genes/DNA are located on chromosones. |
Where do chromosomes exist? | In every cell |
How do chromosomes exist? | Chromosomes exist in pairs |
How many pairs of chromosomes does the human body have? | 23 pairs; 46 individual chromosones |
What are chromosomes made up of? | Chromosomes are made up of chromatin |
What is chromatin made up of? | DNA and protein |
What is a locus? | A spot on a chromosome where a gene is located. |
Each chromosome has its own what? | Gene. |
How would you say...A
=
A | Big a over big a |
What is a centromere? | coiled up chromatin; it has a purpose. |
If you stretch out a chromosome, what do you get? | DNA. |
What is a genotype? | What the genes on the chromosome are. |
What is a phenotype? | What the genes produce physically
*physical representation of the genotype. |
Can genetypes have different forms? | Yes. |
What are the forms of genetypes called? | Alleles. |
T=tall
t=short | T dominates over little t unless t
=
t |
Dominance | The presence of this allele makes all others; it's the ruler |
Recessive | The matched one |
If one allele is dominant, what is the other one? | Recessive. |
Where does the dominant go; where does the recessive go?
?
=
? | Dominant on the top; recessive on the bottom. |
Homozygous geneotypes have what? | The same alleles.
T t
= =
T t |
Heterozygous geneotypes have what? | Opposite alleles.
T
=
t |