Transcript Genetics Review

GENETICS REVIEW
GREGOR MENDEL
Father of modern genetics
Austrian monk
First experimented on ordinary pea
plants because they are small and
easy to grow.
Cross pollinated garden pea plants
to study their trait.
TERMS TO REMEMBER
 Fertilization – union of gametes to produce an of fspring.
 Trait – a specific characteristic such as eye color, height, seed
color, coat color.
 Hybrids – Of fspring of crosses between parents with dif ferent
traits.
 Alleles – Dif ferent form of a gene.
 Genes – Factors that are passed from parent to of fspring
 Gametes – Sex cells
 Phenotype – Physical trait
 Genotype – Genetic make up represented by letters
 Homozygous – Organisms that has two identical alleles for a
particular gene.
 Heterozygous – Organisms that has dif ferent alleles for the
same gene
TERMS TO REMEMBER
 Dominant – A trait that appears in the of fspring.
 Recessive – A trait that is carried in the genes but does not
appear in the of fspring.
MENDEL’S CONCLUSION
1. An individual’s characteristics are
determined by factors (genes) that
are passed from one parental
generation to the next.
2. Principle of Dominance – States
that some alleles are dominant and
others are recessive.
QUICK LAB
Refer to page 311 of your Biology Textbook.
Do the Quick Lab – Guided Inquiry on page
311 on a piece of lined paper.
Answer the analyze and Conclude # 1 – 2 and
write your answers on the lined paper along
with your table of Trait Survey.
Graph your answers on a piece of graphing
paper (provide your own!) – you may use a bar
graph or a line graph or any kind of graph
appropriate for your data.
T YPES OF EARLOBES
T YPES OF EARLOBES
WIDOW’S PEAK