Answer:
the first stop is used to fill the micropipette tip and the second stop is used to dispense the content of the tip
Answer:
Due to reduced rate of egg production and several disorders caused by hormonal imbalances
Explanation:
Women lose their fertility at the age of 45 while men are able to produce sperm throughout their life. The reasons however for this are not very clear but it has been found that the rate of production of egg decreases with the advancement of age of females. Also the quality of egg degrades thereby reducing the likelihood of an egg being genetically normal. A woman along with faces several disorders due to the hormonal imbalances and one of these disorders is PCOS, ovarian insufficiency etc., which lead to distorted pattern of menstrual cycle.
Answer;
-Inactivation; limited
Differentiation requires inactivation of particular genes to produce populations with limited capabilities that form tissues.
Explanation;
-Cell differentiation is how generic embryonic cells become specialized cells. This occurs through a process called gene expression.
-Gene expression is the specific combination of genes that are turned on or off (expressed or repressed), and this is what dictates how a cell functions.
-Gene expression plays a critical role in the morphological changes that take place in a developing embryo and fetus and in the differentiation of stem cells to form specialized cells.
Answer:
<h2>Both Yy</h2>
Explanation:
1. As given here,
Total offspring are= 124;
that produce yellow squash= 93;
that produce green squash= 31;
2. Let Y for yellow producing squash and y for green squash;
Y is dominant over y.
3. Cross between two yellow squash producing plants
Genotype of parents = Yy and Yy
offspring = YY, Yy, Yy and yy,
as Y is dominant over y, so YY and Yy all produce yellow squash, and yy produce green squash.
4. Their phenotypic ratio is 3:1 , as in question 93: 31
A layer of ice on the surface keeps the water temperature warmer than the air temperature.
