Two parents are heterozygous for a gene that has a simple dominant-recessive pattern of inheritance. If they have four offspring, how many of the offspring will have the recessive-recessive genotype.

Which describes the scientific view's order of earth's first living things to the most recent? A. cyanobacteria, hagfish, crocodilians, giant ground sloths B. cyanobacteria, crocodilians, hagfish, giant ground sloths C. cyanobacteria.

Why might arctic species, like the polar bear, have large feet? (site 1)

Which of the following statements most accurately describes how water moves through Earth and its atmosphere? A. Liquid water enters the atmosphere from Earth's rivers and oceans. B. Liquid water falls to Earth as rain. C.

Which two of the following are major structural components of the cell membrane

This pedigree chart tracks the inheritance of a recessive trait that is not sex-linked. Based on the information in the chart, which of the following statements is true? This pedigree chart shows three generations.

A segment of dna that codes for rna and a protein is a

For older adults and previously inactive individuals, exercise intensity should fall closer to what percentage of the maximal heart rate?

Colleen has been advised by her physician to avoid taking high-dose supplements of certain vitamins because they can accumulate to toxic levels in her body. which vitamins?

In 1865, a biologist, St. George Jackson Mivart, constructed an evolutionary tree of existing primate species with many branches based on analysis of spinal columns. But to his dismay, another tree based on limb comparison was quite different.

How does the amount of rainfall affect the amount and types of seeds present on the Galapagos Islands?