Cellular & Molecular Genetics - German Flashcards Preview

HFF - Exam III > Cellular & Molecular Genetics - German > Flashcards

Flashcards in Cellular & Molecular Genetics - German Deck (20):
1

What is a gene?

A region of DNA that controls a discrete hereditary characteristic, usually corresponding to a single protein or RNA

2

Where is the telomere found

On the ends of a genome

3

How many autosomes are in the genome

44 autosomes & 2 sex chromosomes

4

DNA in nucleosome form is called.....

Chromatin

5

In which phase of the cell cycle is DNA replicated?

S phase

6

Which cell cycle do cellular contents become duplicated

G1

7

What does "DNA replication is semiconservative" mean

Basically means in the 2 new DNA strands, there is 1 new strand and 1 old strand

8

Which of the following places nicks in the DNA to relax coils?

-DNA Polymerase
-Topoisomerase
-DNA Primase
-DNA Helicase

Topoisomerase

9

WHich of the following creates new DNA?

-DNA Polymerase
-Topoisomerase
-DNA Primase
-DNA Helicase

DNA Polymerase

10

Which of the following creates RNA primers on the LAGGING strand?
-DNA Polymerase
-Topoisomerase
-DNA Primase
-DNA Helicase

DNA primers

11

In which direction does the DNA chain grow?

5--->3

12

Diploid cells are (mitosis/meiosis) cells

Mitosis

13

List the steps of Mitosis

1. Prophase
2. Prometaphase
3. Metaphase
4. Anaphase
5. Telophase
6. Cytokinesis

14

What is the main difference between Meiosis and Mitosis?

First, meiosis involves not one, but two cell divisions. Second, meiosis leads to the production of germ cells, which are cells that give rise to gametes. Germ cells are different from somatic cells in a critical way.

15

In which phase of mitosis does the nuclear envelope begin to start reappear?

Telophase

16

What is an okazaki fragment?

Okazaki fragments are short, newly synthesized DNA fragments that are formed on the lagging template strand during DNA replication. They are complementary to the lagging template strand, together forming short double-stranded DNA sections.

17

Define independent assortment

The Principle of Independent Assortment describes how different genes independently separate from one another when reproductive cells develop.

18

Define Recombination

The rearrangement of genetic material, especially by crossing over in chromosomes or by the artificial joining of segments of DNA from different organisms.

19

When does genetic recombination occur in Meiosis?

Meiosis I

20

In which phase of Mitosis do chromatids start to condense?

Prophase