Question

SEX DETERMINATION - gender outcomes Give the gender and number of Barr bodies (where asked) for the following organisms with the indicated karyotypes. M = male meta-M = meta-male I = intersex or indeterminate gender F = female meta-F = meta female T = Turner's Syndrome K = Kleinfelter's Syndrome: A haploid ant. An insect with gender chromosome X under the Protenor model An insect with gender chromosome XX under the Lygeus model A butterfly with ZW sex chromosomes A fruit fly with chromosomes XXX/2A A fruit fly with chromosomes XX/3A (gender) (# of Barr bodies) A human with karyotype 46 XY (gender) (# of Barr bodies) A human with karyotype 45 X

Answer 1

The process of Haplodiploidy is seen is the Hymenopterans like bees ants etc so in this case the Haploid Ant will be MALE.

According the to the protenor model also known as the the XX/X0 model the Female are the XX homogametic where as the the males are the X0 so the insect with gender X will be Male.

The lygeaues model is the more common XX/XY model where the females are homogametic so the insect with gender XX will be a female.

The ZZ/ZW system is used in the birds moths and butterflies so in this case the butterfly with the ZW gender is a MALE.

In the case of fruit the sex is determined by the X/A ration that is the sex chromosome and the autosome ratio so the the XXX/2A fruit fly has a ration that is greater than 1 so it will be a META FEMALE.

fruit fly with chromosome XX/3A has a ration lesser than 1 but between the 0.5 and 1 so it will be an INTERSEX. according to this model if the ration is 1 it is a female, o.5 is a male anything between 0.5 and 1.0 is intersex above 1.0 is meta female and below 0.5 is meta male.

Female gender 0 Barr bodies A human with karyotype 45X is a Turner female .