LS5 T7L2 Chromosomes and Inheritance Quiz

Each parent contributes one of the genes for a particular trait. The genes of the pair are called:

• variables
• gametes
• hybrids
• alleles

Two brown eyed parents (Bb) have a baby. What is the chance the baby is blue eyed?

• 0 %
• 25%
• 50%
• 75%

What are small stretches of DNA that code for traits

• Nuclei

• Chromosomes
• Genes

• Centromeres

How many pairs of chromosomes do human body cells have?

• 10

• 22

• 23

• 44

• 46

What do the circles represent?

• Male

• Female

What do the squares represent?

• Male

• Female

Examine the parents in generation I. How many children do they have?

• 3

• 5

• 6

• 7

What is the purpose of pedigrees?

• To track traits in a family

• To make determinations about offspring

• To observe a family tree

• Pedigrees are not particularly usefule

What does a filled square represent?

• not affected male

• affected male

• not affected female

• affected female

What does an open/unshaded circle represent?

• not affected male

• affected male

• not affected female

• affected female