Gregor Mendel

Gregor Mendel details

Gregor Mendel first geneticist to

Self-fertilization

Example Self-fertilization

Cross-fertilization

Cross-fertilization example

Stamen

Carpel

Parental generation (P)

First-generation (F1)

Second-generation (F2)

Homozygous (particular characteristic) Pea Plants

True-breeding

Dominant

Recessive

Law of segregation

Genotype

Phenotype

Punnett square method named after

Punnett square method
You must be able to determine:

Mendel Hypothesized

Law of independent Assortment

alleles of one gene may be distributed to gametes independently of alleles for other genes

Genes on the same chromosome

Recombination

Sex determined sex chromosomes

Sex-linked genes found

Y chromosome carries

X chromosome carries

X genes have no counterpart on Y

X chromosome genes

Females of 2 X chromosomes

males only one X Chromosome

Y chromosomes contain

Mendelian Rules of Inheritance does not apply to all traits because

Incomplete Dominance

Co-Dominance

Polygenic Inheritance

Pleiotropy

Pleiotropy example

SRY gene

Environment

Environment examples

Temperature (fur)

Siamese cats genotype

Siamese babies

Investigating human genetic disorders

Human genetic disorders are caused by recessive alleles

Genetic Disorders
Caused by dominate allels

Genetic disorders
Sex linked

Chromosome number affect humans

Abnormal number of sex chromosomes

Turner Syndrome

Trisomy X

Klinefelter Syndrome

Jacob Syndrome

Abnormal number of autosomes
22 pairs

Trisomy 21

Trisomy 18

Trisomy 13