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3 years ago

Refer to the illustration above. The structure labeled D is a(n)

Biology

1 answer:

maksim [4K]3 years ago

8 0

Theres not a photo there, or like i cant see one x

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Two true-breeding stocks of pea plants are crossed. One parent has red, axial flowers and the other has white, terminal flowers;

gogolik [260]

Answer:

187.5 or rounded off to 188 white, terminal flowers

Explanation:

Let red=R and white=r where R>r; axial=A and terminal=a where A>a

The parents are true-breeding which means that they are homozygous.

P: RRAA x rraa

F1: RrAa

We then cross two plants from the F1 generation

RrAa x RrAa

To find out the probability we look at the different traits individually

Rr x Rr

yielding 1/4 RR (red), 1/2 Rr (red), 1/4 rr (white)

Aa x Aa

yielding 1/4 AA (axial), 1/2 Aa (axial), 1/4 aa (terminal).

We determine which F2 genotypes would allow for red, terminal flowers.

RRaa and Rraa

Then we use the multiplication rule to determine the probability of these occurring

RRaa: 1/4 x 1/4 = 1/16

Rraa: 1/2 x 1/4 = 1/8

Next we use the addition rule

1/16 + 1/8 = 3/16

To find out the number of these plants within the 1000 F2 plants we multiply the probability with 1000

3/16 x 1000= 187.5 red, terminal flowers

8 0

3 years ago

Which do you think has a higher caloric value per serving, fats or carbohydrates (sugars and starch)?

murzikaleks [220]

I would believe that sugars and starches would have the most caloric value.

3 0

3 years ago

Which type of primase is a combination of RNA polymerase and DNA polymerase that makes short RNA primers and then extends them w

alekssr [168]

Answer: Eukaryotic

Explanation:

3 0

3 years ago

What are these models meant to show ?

tangare [24]

Answer:

Explanation:

I think B

4 0

3 years ago

You apply a force on a crowbar to open a stuck door. The effort length of the crowbar is 26 cm long and the resistance length is

kherson [118]

Answer:

6.5 cm

Explanation:

Mechanical advantage is a measure of efficiency or performance of a tool or machine in terms of force amplification which is done by the machine or tool. In simple terms, it measures that at what extent the applied force is increased with the help of tool or machine.

Mathematically, it is the ratio of force produced by the tool or machine to the force actually applied to the tool.

In terms of effort length and resistance length, it is calculated as -

Mechanical advantage = $\frac{\textrm{Effort length}}{\textrm{Resistance length}}$

Thus, Mechanical advantage = $\frac{26}{4}$ = 6.5 cm.

5 0

3 years ago