Why is it more practical to prepare karyotypes by looking at somatic diploid cells rather than haploid gametes?

This is an organelle containing chlorophyll in which most autotrophs transform light energy into chemical energy.

Abiotic factors in an ecosystem does not include which of the following? water. bacteria. nutrients. soil.

A researcher found a method she could use to manipulate and quantify phosphorylation and methylation in embryonic cells in culture. In one set of experiments, she succeeded in increasing the acetylation of histone tails in the chromatin of the cells.

A cell might perform anaerobic respiration for which of the following reasons? a) It lacks glucose for degradation. b) It lacks the transition reaction to convert pyruvate to acetyl-CoA.

Which of the following statements about taxonomy systems is false? A Phylogeny and the Linnaean system give us the same results. B The hierarchical classification and the Linnaean system give us the same results.

What is a type of research that involves observation and collecting data but does not include control

Forms of the Ras protein found in tumors usually cause which of the following? A) DNA replication to stop B) DNA replication to be hyperactive C) cell-to-cell adhesion to be nonfunctional D) cell division to cease E) growth factor signaling to be

Which property of nervous tissue is fundamental to its function of coordinating the body's activities? O cells that are tightly packed contains extracellular matrix presence of neurons short life span

Polydactylism is a dominant trait that results in extra fingers and toes in humans. A polydactyl man marries a woman with 10 fingers and toes. They have a child that has a normal number of digits.

Why are some sediments smaller than others