LESSON 1: G1 - Heredity Flashcards
What is essential to all life?
Cell divsion and reproduction
Cell divsion passes…
chromosomes fron parent to daughter
Chromosomes
They carry informaton for traits
How many pairs of chromosomes
23
How many chromosomes total
46
deoxyribonucleic acid
a molecule
that carries genetic information in cells
gene
a segment of a DNA molecule that
codes for a particular trait; found at a
specific location on a chromosome
locus
the location of a gene on a
chromosome
polyploid
having more than two sets of
chromosomes; many plants are polyploids
Genetic material
Used to describe all material n an organism that stores gentic info
Do chromosomes carry many different genes?
They carry many different genes
Genome size
total amount of DNA contained within haploid genome
The 4 smaller molecules DNA is made up of is called the…
Nucleotides
1 set=
haploid cell
2 set=
diploid cell
3 or more sets=
polyploid cell
Asexual reproduction
- Via cell division
-Off spring gentically idnetical to parent
-Only one parent
Pros: No seeking of mate
cons: No gentic variety
Sexual reproduction
- Produced from fusion of 2 sex cells
- Two parents
-gentically unique
Pros: can adapt to changing enviroments
cons: Loss of resources and combo of info can make offspring weak
