Monarch Butterflies and Bowhead Whales: A Study in Conservation and Longevity

The video discusses the decline of monarch butterflies from 1 billion in the 1990s to 35 million today, largely due to the loss of milkweed caused by glyphosate herbicides. It also covers the potential listing of monarchs as endangered. Additionally, the video explores the longevity of bowhead whales, which can live over 200 years, and the genetic factors that may contribute to their long lifespan. The video concludes with a call to support SciShow.

What was the estimated population of monarch butterflies in the 1990s?

• 500 million

• 1 billion

• 2 billion

• 100 million

Which plant is crucial for the survival of monarch caterpillars?

• Milkweed

• Clover

• Sunflower

• Dandelion

What is the main reason for the decline in milkweed habitat?

• Use of glyphosate

• Climate change

• Urbanization

• Deforestation

What could be a potential outcome if monarch butterflies are listed as endangered?

• Introduction of new species

• Increased hunting

• Habitat protection

• More pesticide use

How long can bowhead whales live?

• 100 years

• 150 years

• 200 years

• 250 years

What is the purpose of sequencing the genome of bowhead whales?

• To find new species

• To track their migration

• To understand their diet

• To study their longevity

Which gene is associated with DNA repair in bowhead whales?

• BRCA1

• PCNA

• MYC

• TP53

What is a potential benefit of understanding bowhead whale genetics?

• Enhancing whale watching

• Improving fishing techniques

• Creating new habitats

• Developing new medicines

What is the main focus of the research on bowhead whales?

• Their migration patterns

• Their feeding habits

• Their genetic differences related to aging

• Their social behavior

What is the role of PCNA in cells?

• To promote cell division

• To repair DNA damage

• To produce energy

• To initiate cell death