**For each answer, explain why when possible.**
1.) Cats contain a chromosome # of 2N=38. How many chromosomeswould be located in a maturing sperm in a feline testis, assumingthat the sperm has entered Meiosis II?
-76
-19
-38
-32
2.) A sperm is small and an egg is large. Why could this be? Canchoose more than one answer.
-Eggs need to be able to move completely outside of the mother forfertilization.
-Eggs are stationary and contain a supply of proteins, mRNAs,stored energy etc of the embryo-to-be.
-Sperm are motile, sometimes traveling considerable distances (on acellular scale).
-Twins will results from eggs that have the same genetic materialoriginally.
3.) Tons of organisms have evolved sex as a means of reproduction.Why? Tough question, choose the one most sensible answer.
-Sex helps an organism reproduce faster than any othermethod.
-Sex allows greater genetic variation in a population.
-Sex allows a species to mutate more accurately.
-Sex speeds up the rate of natural selection on a mutation.
4.) Zoonotic diseases are diseases that can be spread from otheranimal species to us. In this part of the lab we'll be taking somereasonable precautions to make sure that we don't allow unduecontact between their parasites and the interior of our bodies. Whyare we more vigilant about zoonotic diseases for the Gametogenesislab?
-The samples are fresh (they were part of a living organism just aday before)
-The samples are from mammals, so their parasites are closerevolved to us
-We are using sharp tools and razor blades, making access into ourbloodstream potentially easier
-The samples are from warm-blooded animals which have similardiseases to ours
5.) Echinarachnius parma (the common sand dollar) releases largeamounts of sperm and oocytes into the water. To avoid wasting spermwhenever possible, these gamete cells will not self-fertilize. Thismeans that you (Choose one):
-Will need to use sperm and eggs from different individuals inorder to successfully fertilize the oocytes.
-Can use room temperature conditions.
-Don't need to worry where the oocytes came from.
-Should focus your microscope as quickly as possible.
**For each answer, explain why when possible.**
1.) Cats contain a chromosome # of 2N=38. How many chromosomeswould be located in a maturing sperm in a feline testis, assumingthat the sperm has entered Meiosis II?
-76
-19
-38
-32
2.) A sperm is small and an egg is large. Why could this be? Canchoose more than one answer.
-Eggs need to be able to move completely outside of the mother forfertilization.
-Eggs are stationary and contain a supply of proteins, mRNAs,stored energy etc of the embryo-to-be.
-Sperm are motile, sometimes traveling considerable distances (on acellular scale).
-Twins will results from eggs that have the same genetic materialoriginally.
3.) Tons of organisms have evolved sex as a means of reproduction.Why? Tough question, choose the one most sensible answer.
-Sex helps an organism reproduce faster than any othermethod.
-Sex allows greater genetic variation in a population.
-Sex allows a species to mutate more accurately.
-Sex speeds up the rate of natural selection on a mutation.
4.) Zoonotic diseases are diseases that can be spread from otheranimal species to us. In this part of the lab we'll be taking somereasonable precautions to make sure that we don't allow unduecontact between their parasites and the interior of our bodies. Whyare we more vigilant about zoonotic diseases for the Gametogenesislab?
-The samples are fresh (they were part of a living organism just aday before)
-The samples are from mammals, so their parasites are closerevolved to us
-We are using sharp tools and razor blades, making access into ourbloodstream potentially easier
-The samples are from warm-blooded animals which have similardiseases to ours
5.) Echinarachnius parma (the common sand dollar) releases largeamounts of sperm and oocytes into the water. To avoid wasting spermwhenever possible, these gamete cells will not self-fertilize. Thismeans that you (Choose one):
-Will need to use sperm and eggs from different individuals inorder to successfully fertilize the oocytes.
-Can use room temperature conditions.
-Don't need to worry where the oocytes came from.
-Should focus your microscope as quickly as possible.
