Biology (pg 34) Flashcards
Why are 46 chromosomes in the human body are often described as 23 pairs?
Because the chromosomes pair up
What makes one gene different from all other genes
The coding of each gene is different to the other one or could have different amount of base genes
Base sequence of ATTGTCCAGGTGGTC
TAACAGGTCCACCAG
Identify the parts of the nucleotide labelled Abc
Phosphate- |
Sugar -> 0 ~~~
What is replication?
The process of creating new and identical dna
How could 2 homozygous parents could have a hetrozygous child
Because the parents have different genotype xx and xy
Two homozgous make 1/4 of hetrozygous. If your male its because your dad has the y chromosone
Chromosomes that are not sex chromosones
Autosomes
Circles of dna found in bacteria
Plasmid
The genetic information carried by a haploid set of chromosones
Genome
Compare haploid and diploid cells
Haploid is The number of Chromosones in gamtes and diploids are the number of chromosomes in body cells
Nucleotide
The building blocks of dna
Bases
A pair of bases that can join to
make the rungs of the dna ladder- adenine and thymine, guanine and cytosine
Chromosones
Structures in the nucleus
Dna
A molecule that determines the genetic characteristics of living things
Smallest to largest
Chromosone-gene-base sequence- base pair