The nondisjunction in the first mitosis that causes a fly gynandomorph to form could only occur in a zygote that is:A. XYY B. XO
C. XY
D. XX

A. XYY

Explanation:

Nondisjunction: The term "nondisjunction" is described as the failure of "sister chromatids" or "homologous chromosomes" to separate properly or precisely during cell division.

Gynandromorphism hasn't been discovered or identified in human beings, but it has been expressed or found in a variety of other creatures. However, a few scientists believe that gynandromorphs are considered as chimeras.

Example: In insects, the given condition can be caused due to the fact that two distinct sperm enters in one egg.

the level of progesterone is low at the pre-ovulatory phase of the cycle but it gradually increases and the levels are high at the luteal phase. if pregnancy occurs, the level of progesterone will be high throughout the pregnancy.

if egg is fertilized and the mother gets pregnant, progesterone starts preparing the uterus for the implantation. it starts building up the lining of uterus and make it hostile of the period of pregnancy.

energy and particles