T.H.Morgan worked with

• house fly

• fruit fly

• snapdrgan

• wild pea

What determines gender in humans? 

• the X and Y chromosome
• chromosome 21
• x chromosome
• y chromosome

Alleles that are inherited on the X or Y chromosomes:

• multiple alleles
• sex-linked genes
• codominance
• polygenic inheritance

According to _______, genes that are closer together on a chromosome, have a higher chance of being inherited together.  

• Gene Linkage
• Polygenic
• Pleiotropy
• Epistasis

A and B are linked genes. In a study of 100 offspring, 80 parental genotypes for A and B, while 20 were recombinants. A and B are how many map units apart? 

• 10
• 5
• 20
• 30

Causes genes to not segregate independently. Causes genes to be more likely to be inherited together. Represents an exception to Mendel's Law of Independent assortment.

• Gene linkage
• Epistasis
• Polygenic traits
• Codominance

the new combination of genes produced by crossing over and independent assortment.

• genetic recombination
• polygenic trait
• epistasis
• gene linkage

A drawing that shows the sequence of genes on a chromosome and can be created using data collected about crossing-over.

• chromosome mapping
• gene linkage
• karyotype

A dog gives birth to 5 puppies. What percentage of the chromosomes does each puppy share with the mother?

• 25%
• 50%
• 75%
• 100%

Genes that are closer to each other on a chromosome will have a higher recombination rate.  

• True 
• False