When a human egg ovulates it arrests in metaphase II until it is fertilized by a sperm. How many chromosomes are present in the egg at metaphase II?

A. 46
B. 2 with sister chromatids still attached
C. 4
D. 23 with sister chromatids still attached
E. 1


D. 23 with sister chromatids still attached

Biology & Microbiology

You might also like to view...

The average time it takes for actively dividing human cells to complete one cycle of division and growth, and be ready for another division, is about 24 hours

Given that there are 50-100 trillion cells in a human body, how long would it take to go from fertilized egg to the time the baby is born? A. 45.5 days B. 4.5 days C. 9 months

Biology & Microbiology

Physical and chemical barriers that form the first line of innate defense include

A. the acidity of the stomach. B. tear fluid from the eye. C. an unpunctured skin. D. mucus and cilia of the respiratory tract. E. All of the answer choices are correct.

Biology & Microbiology

After correcting for the noted deletion in slots 62-64, it becomes clear that mutations in the ________ triplet have the most effects on changes in phenotype

Fill in the blank(s) with correct word

Biology & Microbiology

Small, circular DNA molecules that are located outside the main chromosome of bacteria and are capable of self-replication are ________

Fill in the blank(s) with correct word

Biology & Microbiology