Recombination and Linked Genes

Genetic recombination is the production of offspring - - -

• with new combinations of alleles

• with similar genes as their parent

• that are completely different from the parents

• that are super cute and irresistible

Offspring LIKE parent = _________
Offspring DIFFERENT from parent = _________

• Parental : Recombinant
• Recombinant : Parental
• Linked : Unlinked
• Unlinked : Linked

If results of recombination do NOT follow Mendel's Law of Independent Assortment, genes are likely to be - - - 

• shuffled during meiosis
• linked
• inherited
• on separate chromosomes

Tags

NGSS.HS-LS3-2

Linked genes tend to be inherited together, like freckles and red hair, because they - - - 

• compliment each other well
• are on chromosomes close together
• are on the same chromosome 
• tend to be adaptations best suited for the environments of the organism

Tags

NGSS.HS-LS3-1

Which genes are most likely linked?

• genes 1 & 2
• genes 2 & 3
• genes 3 & 4
• genes 1 & 4

Tags

NGSS.HS-LS3-2

NGSS.HS-LS3-1

The reason some linked genes may get separated during gamete formation is - - - 

• genes aren't on the same chromosome
• genes don't compliment each other well
• a crossing over event shuffles the genes
• an environmental impact forces the genes to shuffle

Tags

NGSS.HS-LS3-2

On a linkage map, 1 map unit is equivalent to 1% recombination frequency.  If the map unit equivalent is 50+, this means that - - - 

• the genes are linked
• the genes are not linked
• the genes are not on the same chromosome
• the genes are too close to measure

In what stage of meiosis does recombination occur?

• Prophase 1

• Metaphase 1

• Anaphase 1

• Prophase 2

Recombination is also known as

• Independent Assortment

• Crossing over

• Random Segregation

• Random Assortment

ONLY homologous chromosomes and sex chromosomes can cross over

• True

• False