IB Biology SL Topic 3

The image shows a karyogram. What information can be determined from this karyogram?

• The sex is female.

• The haploid number is 54.

• Disjunction occurred during meiosis.

• The species is not human.

Tags

NGSS.HS-LS3-1

What distinguishes an allele from a gene?

• An allele is made of RNA.

• An allele is shorter.

• An allele is a variety of a gene.

• An allele cannot be transferred during genetic modification.

Which is a characteristic of the pairs of sister chromatids that are visible during meiosis?

• They result from the replication of DNA before meiosis.

• They are only present in meiosis I.

• They split apart during metaphase I in meiosis.

• They are only present in meiosis II.

Autosomes are

• chromosomes found in autotrophs, only
• chromosomes that automatically correct all errors in the DNA
• chromosomes that determine traits other than sex
• chromosomes that determine the sex of the individual

The cells produced via meiosis are called:

• sex cells
• somatic cells
• body cells
• skin cells

Tags

NGSS.HS-LS3-2

The chromosomes that pair up during meiosis, are called __________ chromosomes.  

• homozygous 
• asexual
• homologous
• genes

Identify the phase.

• Metaphase I
• Metaphase II
• Prophase I
• Anaphase II

This image shows chromosomes during Prophase 1. Which of the following correctly describes the process shown?

• segregation of sister chromatids
• condensation and segregation of alleles
• mutationin which the DNA content of the gene is altered
• crossing - over in which alleles are exchanged

The Law of Segregation states: 

• alleles are inherited together
• alleles separate during gamete formation
• only dominant genes are inherited

In order to insert a human gene into plasmid, both must 

• code for the same gene product.
• be cut by the same restriction enzyme.
• originate from the same type of cell.
• have identical sequences.