Free WGU Introduction-to-Biology Exam Dumps Questions & Answers

Homologous chromosome pairsare undergoing crossing over but havenot yet lined upat the cell's midline.
Which stage is this?

• A.  Anaphase II
• B.  Prophase I
• C.  Prophase II
• D.  Anaphase I

Rabbit populations rise and fall over 8-10 years; wolf populations in the same area follow with a ~2-year lag.
What is the relationship between wolves and rabbits?

• A.  Competition
• B.  Mutualism
• C.  Symbiosis
• D.  Predator-prey

A species of fish can have dominantred fins (R)or recessivewhite fins (r), and dominantlong fins (L)or recessiveshort fins (l). In adihybrid cross, each parent isheterozygousfor both traits (RrLl × RrLl). How manydifferent gamete genotypescan each parent produce?

• A.  2
• B.  1
• C.  4
• D.  3

Agroup of lionsthat preys on deer constitutes which ecological level?

• A.  Population
• B.  Community
• C.  Ecosystem
• D.  Biome

Which organism in this food web is a decomposer?

• A.  Algae
• B.  Damselfly
• C.  Frog
• D.  Bacteria