Answer:
2 in 4
Explanation:
If a female cat with orange fur (XOXO) is crossed with a male cat with black fur (XoY) then:
P: XOXO x XoY
F1: XOXo XOY XOXo XOY
This means that half of the offspring will be females with tortoiseshell color (XOXo) and other half of the offspring will be males with orange fur (XOY).
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
Answer: the membrane channel
Explanation:
In passive diffusion, the small water molecules can move across the phospholipid bilayer seen in blue. This layer acts as a semi-permeable or selectively permeable membrane; its hydrophilic heads are attracted to water (seen facing outwards) while its water-repellent hydrophobic tails face towards each other- allowing molecules of water to diffuse across the membrane along the concentration gradient.
Thus the water will move from an area of high concentration to an area of low concentration, until the system reaches a steady state called equilibrium- after this, there will be no net movement of water. Similarly via osmosis, the water passes through the membrane due to the difference in osmotic pressure on either side of the phospholipid bilayer this means that the water moves from regions of high osmotic pressure/concentration to regions of low pressure/ concentration to a steady state.
The dialysis tubing mimics a semi permeable membrane; it only allows water and small molecules of iodine to cross into the bag containing starch. The tubing is impermeable to starch; these large molecules require the aid of protein omplexes called membrane channels, in order to move across the membrane and against the concentration gradient.
<span>After the stove is turned off, convection currents continue to transfer energy through the water for a period of time</span>