Variation
Chromosome abnormalities by Zheng & Laysa (PD2G)
Nondisjunction and Polyploidy
D2 SPECIES AND SPECIATION. Assessment Statements Define allele frequency State that evolution involves a change in allele frequency in a population’s.
Chromosome [email protected]. What Exactly is a chromosome? Chromosomes are the rod-shaped, filamentous bodies present in the nucleus,
Abnormal meiosis Sometimes mistakes occur during meiosis –Segments of chromosome (block of genes) can be lost or added – chromosome mutation / aberration.
28 February, 2005 Chapter 11 Chromosome Mutations Variation in chromosome number and structure.
UNDERSTANDING HEREDITY Part 2. MUTATIONS Mutations Genes code for proteins Mistakes in genetic code cause mistakes in the protein Mutations are mistakes.
Biology 12: Genetics CHROMOSOMES!. CELL REVIEW All living things are made up of cells (skin, muscle, blood, nerve) Work like a factory to keep us functioning.
C HROMOSOMAL ANOMALIES REPLICATION, TRANSCRPITION AND TRANSLATION Dr MOHAMED FAKHRY 1.
CHROMOSOME STRUCTURE page 12 EUKARYOTIC – DNA wrapped around histone proteins. Banding pattern – dark – heterochromatin – non-coding Light – euchromatin.
Chapter 6 Variation in Chromosome Structure and Number
