Meiosis & Mitosis

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Meiosis & Mitosis

This section mainly covers Meiosis and a bit of Mitosis. This section contains a total of 11 questions.

Which ONE of the following shows the results when a cell with 20 chromosomes undergoes mitosis? *

2 points

Based on the text below, what is the expected number of chromosomes in each cell at the end of the investigation? *

2 points

12 replicated chromosomes

24 replicated chromosomes

24 unreplicated chromosomes

48 unreplicated chromosomes

Which diagrams (i) to (iv), are possible representations of the chromosomes at the poles of the cell during telophase I of normal meiosis? *

2 points

(iii) and (iv) only

(i) and (ii) only

(i) and (iii) only

(i), (ii) and (iv) only

DNA replication occurs during... *

2 points

anaphase I

interphase

prophase I

prophase II

Cells that can differentiate into any type of cell are called... *

2 points

sex cells

daughter cells

stem cells

haploid cells

The diagram above shows... *

2 points

non-disjunction in metaphase II

a chromosomal aberration that results in haemophilia

a chromosomal aberration involving chromosome pair number 23, leading to Down Syndrome

non-disjunction in anaphase I

Which ONE of the following combinations of alleles would be present in chromatid C after crossing over occurred at point P? *

2 points

Aart

abrT

ABRt

ABRT

In bees, females are diploid and males are haploid. Females and males produce haploid gametes. This means that... *

2 points

females produce gametes by mitosis

males produce gametes by meiosis

males produce gametes by mitosis

females have half the number of chromosomes that males have

When a cell divides by meiosis it results in... *

2 points

four haploid gametes

two diploid gametes

four haploid somatic cells

two haploid somatic cells

The phase in meiosis in which individual centromeres split is called … *

2 points

Anaphase I

Anaphase II

Metaphase I

Metaphase II

Which ONE of the following events occur during metaphase I of meiosis?

2 points

Homologous chromosomes arrange themselves at the equator

Centrioles move to opposite poles

Chromosomes arrange themselves singly at the equator

Splitting of the cytoplasm

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