The most common fatal genetic disorder of Caucasians is

a. cholera.

b. cystic fibrosis.

c. hemophilia.

d. sickle cell anemia.

e. muscular dystrophy.

When an animal confronts a "fight-or-flight" situation, the release of epinephrine promotes glycogen breakdown in the liver, heart and skeletal muscle. The end product of glycogen breakdown in the liver is glucose, but in muscle, it is pyruvate.

which disorder is degenerative and caused in part by a deficiency of the neurotranmitter acetylcholine?

Two kittens are sleeping by a furnace vent. they are relying mainly on what kind of heat transfer?

How far back does the fossil record extend? a. 1 billion years b. 560 million years c. 3 million years d. 3.5 billion years

Which statement about haploid organisms is true? A) They must be heterozygous for all genes. B) They must be homozygous for all genes. C) They have excess alleles for certain genes. D) They are missing a certain number of genes.

What gases is contributing the most to causing global warming?

Heat and pressure act on a layer of sedimentary rock over millions of years. Which of the following features is most likely to develop on the rocks as a result?

A. En los animales, las células hijas haploides producidas por división meiótica se llaman

A diploid number of chromosome is reduced to a haploid number

What is the result of a mutation during replication? Answers: A-The strands are broken B-The strands are different C-The strands are identical D-The strands are continuous