Acell from a tissue culture has 38 chromosomes. after mitosis and cytokinesis, one daughter cell has 39 chromosomes and other has 37. what might have occurred to cause the abnormal chromosome numbers?

The health, management and conservation of biodiversity, is a challenge facing ecosystems worldwide. the major factors that affect the health and function of the great barrier reef are climate change and pollution. which question investigates the effects of a biotic factor on the reef ecosystem?

Explain the significance of thesaurus geographicus

Where is having brightly colored feathers that attract mates most clearly an adaptation for a bird? a. a forest with dense vegetation b. a sandy beach beside an ocean c. a snowy tundra with little vegetation d. a swamp with many hawks that eat birds