How many and what type of chromosomes would be expected in s karyotype of a human male?

The diagram shows a fossil of an ancient whale skull and a skull of a present-day whale. the ancient whale is extinct and is believed to be an ancestor of the present-day whale. what do these skulls most likely show that supports darwin’s theory of evolution? all populations can adapt and survive. only some organisms have a common ancestor. populations change slowly over time. populations rapidly become extinct.

What best explains the inability for life to exist in earth early atmosphere

Which best describes a gene? a. a sister chromatid b. a chromosome c. a tetrad d. a piece of a chromosome