Genetics chapter 3

Regions of the chromosome with very few functional genes are called:

• Euchromatin

• Chromatids

• Heterochromatin

• nucleosomes

Which type of histone is not part of the nucleosome core particle?

• H1

• H2A

• H2B

• H3

• H4

The mode of cell division that results in four genetically different daughter cells, each containing one haploid set of chromosomes, is known as:

• Mitosis

• Meiosis

• Interphase

• Cancer

Which of the following types of inheritance is characterized by an affected father who has all affected daughters but no affected sons?

• X-linked dominant

• X-linked recessive

• Y-linked

Which of the following is the correct order of stages in mitosis?

• telophase, prophase, metaphase, anaphase

• prophase, metaphase, anaphase, telophase

• metaphase, anaphase, prophase, telophase

The physical separation of homologous chromosomes during which phase is the physical basis for the principle of segregation?

• . anaphase I

• . anaphase II

• prophase I

At which substage of prophase 1 does crossing-over take place?

• Leptotene

• zygotene

• pachytene

The binomial distribution of probabilities can be used to:

• determine the frequency of a rare allele in a population

• predict the outcome of events irrespective of order

• calculate a Chi square value