The diagram shows a section of the karyotype from a human donor. Chromosome pairs 19 through 22 are labeled.

The diagram shows human chromosomes numbers 19, 20, 21, and 22. Three #23 chromosomes are present. Numbers 19, 20, and 22 show a pair each.

Which statement describes the gametes that joined together to form this karyotype?
A. The gametes formed normally, and then one chromosome was added when they joined together.
B. The gametes formed normally, and then one chromosome split apart when they joined together.
C. One gamete formed abnormally because a pair of homologous chromosomes failed to separate.
D. Both gametes formed abnormally because in each gamete, one pair of homologous chromosomes failed to separate.

For a to be healthy, it has to have lots of different kinds of plants and animals. all of the different types of plants and animals in an ecosystem. name four types of ecosystems from those listed in the video. b) c) d) most living things live here. all living things depend on how an ecosystem like a game of sticks? why should we build new buildings on existing land? name four extinct species from those listed in the video. b) c) d) the best way to wipe out a species is to the largest ecosystem in the world is this percent of the world is covered by water. how many of all species in the world live in the ocean? list five things you can do to increase biodiversity. b) c) d) e) how many species are we losing per hour?

Which of the following is not a symptom of desertification? a) decrease in salt content of the soil b) lowering of the water table c) reduced surface water d) increased soil erosion e) loss of native vegetation

This part insulates the reaction chamber from the transfer of heat to or from the surrounding environment