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3 years ago

What must happen before a cell can begin mitosis??

Biology

1 answer:

ss7ja [257]3 years ago

7 0

Answer - The chromosomes has to be crucially duplicated and it happens actively during the resting phase or interphase.

Reasoning - During the resting phase or interphase you call it, Is important to have the same exact DNA or Chromosomes to be duplicated. If the chromosomes did not duplicate during the interphase then the split of the cell would be unbalance and uneven and likely to cause defects.

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An individual that is homozygous dominant for type B blood and little finger shape mates with an individual that is heterozygous

gregori [183]

Answer:

Let "L" be the dominant allele for little finger shape and "l" be the recessive allele for the same.

It is given that a person is homozygous dominant for blood group B and little finger shape. Hence, the genotype would be $I^BI^B$ LL

The other person is heterozygous for blood group A and homozygous recessive for little finger shape. Hence, the genotype would be $I^Aill$

The type of gametes formed by the first parent would be $I^BL$ only.

The type of gametes formed by second parent would be $I^Al$ and il.

The cross is shown in the attached figure.

According to the cross, we get two phenotype:

offspring with blood group AB and dominant little finger shape, and
offspring with blood group group B and dominant little finger shape.
They are present in 4 : 4 = 1 : 1

According to the cross, we get two genotype:

$I^AI^BLl$
$I^BiLl$
They are also present in 4 : 4 = 1 : 1.

5 0

3 years ago

Which blood constituent makes up most of the volume of blood?

Effectus [21]

Blood plasma is the blood constituent which makes up most of the volume of blood. The blood plasma is 55 percent of the total blood and 45 percent is formed by other constituents which includes RBC and WBC. Blood proteins is a part of plasma which means they are less than that of plasma in the blood.

6 0

3 years ago

What do you call the erosion of sediment by wind? * A. plucking B. drifting C. deflation D. deposition

Sergeu [11.5K]

Answer: is B)Drifting

7 0

3 years ago

Chondroitin sulfate is found in the matrix of

suter [353]

Answer:

Cartilage

Explanation:

School

4 0

3 years ago

Question 6 (1 mark)

Andrej [43]

Answer:

option A

Explanation:

Energy gotten from the prey will be transferred up to the food chain.

so directly or indirect, all other members of the food depend on this energy

8 0

4 years ago