A lever with a mechanical advantage greater than 1 is used to ___

Genes for body color (B black dominant to b yellow) and wing shape (C straight dominant to c curved) are located on the same chr

xxMikexx [17]

Answer:

Map distance = Genetic distance, GD = 3.9 MU ≅ 4 MU

Explanation:

The more separated two genes are, the more chances of recombination there will be. The closer they are, the fewer chances of recombination there will be. Two genes that are very close will have a few recombination events and are strongly bounded.

To analyze the recombination frequency, we have to know that:

1% of recombination = 1 map unit = 1centi Morgan = 1,000,000 base pairs.
And that the maximum recombination frequency is always 50%.

The map unit is the distance between the pair of genes for which every 100 meiotic products one of them results in a recombinant one.

Knowing that the genes are linked, we can calculate genetic distances between them. First, we need to identify the genotypes of the parental gametes with the ones of the recombinants. We can recognize the parental gametes in the descendants because their phenotypes are the most frequent, while the recombinants are the less frequent. So:

Parentals:

black, curved 337
yellow, straight 364

Recombinants:

Black, straight 17
yellow, curved 12

To calculate the recombination frequency we will make use of the next formula: P = Recombinant number / Total of individuals.

P = Recombinant number / Total of individuals.

P = 17 + 12 / 337 + 364 + 17 + 12

P = 29 / 730

P = 0.039

The genetic distance (GD) will result from multiplying that recombination frequency (P) by 100 and expressing it in map units (MU).

GD = P x 100

GD = 0.039 x 100

GD = 3.9 MU ≅ 4 MU

3 0

3 years ago

The following figure shows a plant cell immediately after it has been placed in distilled water (A) and a plant cell that has be

DENIUS [597]

Answer:

Plant cell A has lower water potential than cell B. True

Plant cell B is isotonic to the fluid in the beaker. True

Plant cell B's water potential increased due to an increase in solutes inside the cell. False

Plant cell B is at equilibrium with the fluid in the beaker. True

Plant cell A has higher water potential than cell B. False

Plant cell A is at equilibrium with the fluid in beaker. False

Explanation:

Plant cell A has lower water potential than cell B. True

This statement is true because the water potential of A is -2 bars while that of B is zero bars.

Plant cell B is isotonic to the fluid in the beaker. = True

Isotonic solutions have equal water potential. Since the water potential of distilled water is zero and that of plant cell B is zero as well, plant cell B is isotonic to the fluid in the beaker.

Plant cell B's water potential increased due to an increase in solutes inside the cell = False.

An increase in solute inside the cell doe not increase water potential but rather reduces it.

Plant cell B is at equilibrium with the fluid in the beaker. = True

Plant cell B is at equilibrium with the fluid in the beaker because its water potential is zero since the negative solute potential is counterbalanced by the positive pressure potential.

Plant cell A has higher water potential than cell B = False.

Plant cell A has a lower water potential of -2 bars while plant cell B has a higher water potential of zero.

Plant cell A is at equilibrium with the fluid in beaker. = False.

Plant cell A is not at equilibrium with the fluid in the beaker, rather due to its negative water potential, water will move into the cell.

4 0

3 years ago

In peas, yellow seeds (y) are dominant to green seeds (y). a homozygous dominant and a homozygous recessive plant are crossed an

lara [203]

You can figure this out by doing a punnet square to figure out the first generation, and then continue with that punnet square into the next generation.

Y     Y

y Yy Yy

y Yy Yy
It is 100% guaranteed that the first generation is going to be heterozygous dominant. Now we take this and do a second punnet square

     Y    y
Y YY Yy

y   Yy   yy

The second generation has a 75% chance of having yellow seeds.
I hope that this helps!

7 0

3 years ago

What can happen when you have taken much more than the normal amounts of vitamins?

olchik [2.2K]

Although it may sound good to have too much of a vitamin, it's really not. Taking too much can hurt you. different vitamins can cause things such as nausea, diarrhea etc.

7 0

3 years ago

Read 2 more answers

All of the chemical reactions within a cell occur in the

11Alexandr11 [23.1K]

Cytoplasm is the where the organelles are suspended.

The organelles of the cells are located in the cytoplasm where the different chemical reactions happen.
Mitochondria is the power house of the cell and uses ATP to produce biological energy which is used for the cell functions. And Golgi bodies are the organelles responsible for packing, modifying and transportation of proteins and enzymes from the ER. Cell membrane is the covering outermost layer of an animal cell.

7 0

3 years ago

A lever with a mechanical advantage greater than 1 is used to ____.