Presentation:  Introduction to Genetics and ART
> Pretest


1. Regarding human genes and chromosomes, which statement(s) is/are correct?

a. Each human chromosome consists of a continuous DNA double helix

b. Genes are segments of DNA which code for protein or functional products

c. Cytogenetic disorders refer to an abnormal number of chromosomes (i.e., trisomy 13)

d. Single gene disorders refer to diseases caused by gene mutations in one or both genes

e. All of the above

2. What form of inheritance is associated with a 25% chance of an affected offspring if both parents are carriers for the disorder?

a. Autosomal dominant

b. X-linked recessive

c. Autosomal recessive

d. Multifactorial