Show:
DNA
DNA again
Mitosis
Meiosis
Evolution
100

What is the structure of a nucleotide?

Phosphate, sugar, base

100

Two forms of asexual reproduction.

Budding and binary fission

100

What are two reasons for DNA replication?

Cell growth and repair

100

How many times does Interphase occur during meiosis?

1

100

Domestic dogs and wolves evolved from a common ancestor, demonstrating this kind of evolution.

Divergent

200

What are sections of DNA called?

Genes

200

Body cells are also known as?

Somatic cells

200

The cleavage furrow occurs during which stage of mitosis?

Telophase/Cytokinesis

200

Homologous chromosomes exchange genetic information in Prophase I is called?

Crossing over

200
What are the three types of adaptations?

Structural, behavioural and physiological

300

The nitrogenous bases of DNA are joined by what type of bonding?

Hydrogen

300

An individual's entire set of chromosomes is known as what?

Karyotype

300

What stage of mitosis does chromatin condense?

Prophase

300

In what phase do chromosomes line up in single file?

Metaphase II

300

Bats and dolphins are functionally similar in that they both use echolocation however are structurally similar. What kind of evolution is this?

Convergent evolution

400

Offspring will have a blend of both parent's phenotypes.

Incomplete dominance

400

What are 3 features of homologous chromosomes?

Same size, same centromere location and same location for genes.

400

What structure is responsible for forming spindle fibres?

Centrioles

400

At the end of which phase are the first haploid cells produced?

Telophase I

500

Red green colour blindness is an X-linked recessive disease. The mother is a carrier for the disease and the father is unaffected. What is the % chance that their offspring will develop the disease?

25%

500
If a male shows a trait, then so will all his daughters and his mother. However, an unaffected mother cannot have affected sons nor an affected father. What inheritance pattern does this follow?

X-linked dominant

500

What happens during telophase?

Separated chromosomes reach the poles of the cell, nuclear envelope begins to reform, chromosomes decondense back into chromatin and spindle fibres disappear.

500

Which of the following are true regarding the process of meiosis I? 

a. Sister chromatids separate to opposite ends of the cell.

b. Most homologue pairs do not have any crossovers during prophase I.

c. Chromosome number is reduced from haploid to diploid.

d. Sister chromatids in a cell undergoing meiosis are always identical.

c. Chromosome number is reduced from haploid to diploid.

500

An environmental factor that affects the survival and reproduction of a species.

Selection pressure