Unit 5 Mendelian Genetics Test Review

Which of the following is a possible abbreviation of a genotype: a Which of the following is a possible abbreviation of a genotype: a. BC b. Pp c. Ty d. fg Pp

Which of the following is a possible abbreviation of a genotype and explain why: a. BC b. Pp c. Ty d. fg Pp- they represent alleles of the same gene (p) so naturally it should be represented by the same letter!

Which statement is not true. A. genotype determines phenotype B Which statement is not true? A. genotype determines phenotype B. phenotype determines genotype C. a phenotype is the physical appearance of a trait in an organism D. alleles are different forms of the same gene B is not true.

Draw an example of a cross between homozygous dominant and homozygous recessive parents: AA homozygous dominant aa homozygous recessive

What percent will the offspring by heterozygous? 100% Aa

What are Mendel’s Laws that are showcased in the formation of gametes? Law of Independent Assortment Law of Segregation

Which of the following is caused by a chromosomal disorder: a Which of the following is caused by a chromosomal disorder: a. cystic fibrosis b. Down’s syndrome c. Tay-sach’s disease d. Huntingdon’s disease Down’s syndrome

What is one type of chromosomal abnormality that causes Down’s syndrome? Trisomy 21

Which of the following would be found in a gamete (sperm or egg cell)? Haploid

List 2 homozygous dominant disorder. Achondroplasia Huntingdon’s disease

List 2 homozygous recessive disorders. Cystic fibrosis Sickle-cell

What type of chromosomal abnormality is associated with part of a chromosome breaking away and attaching to a non-homologous chromosome? translocation

What type of chromosomal abnormality is associated with part of a chromosome breaking away and reattaching to the same chromosome but in reverse? inversion