ZO-ZZ type of sex determination is. Write the types of sex-determination mechanisms the following crosses show. Give an example of each type. i ) Female XY with Male XO ii) Female ZW with male ZZ. Z Z I ZW type of sex determination is seen in.
For example , there are moths and butterflies that are ZW, but some have been found female with ZO, as well as female with ZZW. Also, while mammals deactivate one of their extra X chromosomes when female, it appears that in the case of Lepidoptera , the males produce double the normal amount of enzymes, due to having two Z’s. [17], 10/24/2018 · Sex determination mechanism in usually chromosome at and is of following type . (1) XX-XY type found in mammals and some insects like Drosophila. (2) XX-XO type found in grasshoppers etc. (3) ZW-ZZ type found in Birds. (4) ZO-ZZ type found in butterflies etc. (a) Male heterogamety i.e.
— grasshopper (b) Female heterogamety – birds, ZW Sex Determination System: Variations & Example | Study.com, ZW Sex Determination System: Variations & Example | Study.com, Sex-determination system – Wikipedia, ZW Sex Determination System: Variations & Example | Study.com, 7/10/2019 · Write the types of sex-determination mechanisms the following crosses show. Give an example of each type . i) Female XY with Male XO ii) Female ZW with male ZZ 36868917, Differentiate between ‘ZZ’ and ‘XY’ type of sex-determination mechanism. XO type of sex determination is seen is : Write the types of sex-determination mechanisms the following crosses show. Give an example of each type . i) Female XY with Male XO ii) Female ZW with male ZZ.
Solution. In ZW-ZZ type of sex determination, the male has two harmorphic sex chromosomes (ZZ) and is homogametic, and the female has two heteromorphic sex chromosomes (ZW) and is heterogametic, There are thus two types of eggs : with Fertilisation of an egg with Z chromosome by a sperm with Z chromosome gives a zygote with ZZ chromosomes (male).
XX-XY type of sex determina tion mechanism is an example of female heterogamety and is found in Drosophila. Reason Male heterogamety is seen in moths where males produce two …
