REMEMBER: color blindness is carried on the X chromosome only! The male has to inherit the mutated gene from his mom and her X chromosome to be color blind. Because the male has only 1 X, he has a greater chance to be color blind than a daughter who would have to inherit a bad X chromosome from each parent!
If you follow the family tree, the person 12 (the daughter of 4x5) could be either XX or XX (I'm using bold to indicate the color blind gene on the X chromosome). You cannot tell from this family tree what she is (except that we know her mom (4) is definitely a carrier!
So you need to do two potential crosses:
1. Daughter 12 is not a carrier; so she is XX
Cross XX with XY; you get the possibility of all daughters as carriers XX, or all normal sons XY.
2. Daughter 12 is a carrier; so she is XX
Cross XX with XY; you get the possibility of daughters that are color blind (XX), daughters as carriers (XX), color blind sons (XY) and normal sons.
Answer:
The correct answer is C. Is the site of embryo implantation.
Explanation:
Uterus is composed of three tissues :
1. Perimetrium: Outer layer of uterus made up of peritoneal. 2. Myometrium: middle layer made up of smooth muscles and 3. Endometrium: made up of simple columnar epithelium and mucous membrane.
Endometrium plays an important role during pregnancy. During pregnancy, the production of estrogen and progesterone increases. This helps the proliferation of epithelial lining and secretory gland present in the endometrium.
Progesterone hormone plays an important part in the implantation of embryo in the endometrium layer of the uterus. Endometrial glands start secreting the nutritive fluid for the development of fetus.
Thus, the correct answer is C. Is the site of embryo implantation.
The best and most correct answer among the choices provided by your question is the first choice or letter A.
<span>The promotion of companies’ sustainably harvested rainforest products is intended to produce cheaper poduets. </span>
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Answer:
<em>The correct option is C. Water is an excellent solvent.</em>
Explanation:
Plasma can be described as blood which is made up of 92% water. The basic role that water plays in the plasma is of a solvent. It readily dissolves substances in it and transports them. Hence. option C is correct.
Option A cannot e considered because moderation of temperature won't fulfil the task of the blood i.e transportation.
Option B cannot be considered because expansion or compression of water are not such factors which help in blood transportation.
I believe it is rocks at a higher elevation. I hope this helps! :)