EOCT Quiz #4 Mitosis, Meiosis, & DNA

1 Suppose that the anole lizard has fifty-two chromosomes in the nucleus of its body or somatic cells. How many chromosomes will be in the unfertilized egg of an anole lizard? 13 B) 26 C) 52 D) 102

All BUT ONE statement describes an advantage of meiosis. 2 All BUT ONE statement describes an advantage of meiosis. Variation is aided by crossing-over which occurs during meiosis. B) Meiosis ensures daughter cells receive one of each kind of gene and half the chromosome number C) Independent assortment provides a huge number of possible genetic combinations in daughter cells. D) Meiosis occurs often because it allows growth and repair of body tissues in multicellular organisms.

What is the purpose of DNA? 3 What is the purpose of DNA? manufactures proteins B) reduces activation energy C) stores hereditary information D) to aid in facilitated diffusion

4 If the somatic cells of a human contain 46 chromosomes, then after meiosis new sex cells would contain _____ chromosomes. 23 B) 46 C) 82 D) 12

disjunction B) meiosis C) mitosis D) replication 5 The process of _________ increases genetic variability as it produces gametes for sexual reproduction. disjunction B) meiosis C) mitosis D) replication

deletion B) inversion C) duplication D) insertion 6 Identify the type of mutation shown in the diagram, with respect to chromosome 20. deletion B) inversion C) duplication D) insertion

infractions B) transpiration C) mutations D) replications 7 Changes in the DNA sequence that affect the expression of genetic information are called infractions B) transpiration C) mutations D) replications

crossing over B) non-disjunction C) genetic shuffling D) transcription 8 During the early stages of meiosis, two chromosomes in a homologous pair may exchange segments, producing genetic variation in sex cells. This process of exchange is called. crossing over B) non-disjunction C) genetic shuffling D) transcription

Mitosis results in: 2 diploid cells B) 4 diploid cells 9 Mitosis results in: 2 diploid cells B) 4 diploid cells C) 2 haploid cells D) 4 haploid cells

gene flow B) genetic drift C) natural selection D) crossing over 10 Carol and Joseph have freckles and curly red hair. All of their children, except one, also have freckles and curly red hair. Their son, Sam, has the same curly red hair but not one freckle! How can a child get a chromosome that is totally different from the original chromosomes of both parents? gene flow B) genetic drift C) natural selection D) crossing over

Key B D C A