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Brrunno [24]
3 years ago
10

A dichotomous key helps identify organisms through its

Biology
1 answer:
Gennadij [26K]3 years ago
5 0
A. Characteristics

You would use this key and it will say something like go to 12 of it has long wings or go to 11 if it has no wings.
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Which process helps gas exchange to occur?
Vilka [71]
Respiration is a process of exchanging gas.
6 0
3 years ago
Figure 1.1
jarptica [38.1K]

I think that the answer should be A or in other words, it would be liquid.

8 0
3 years ago
How can mutations affect evolutionary processes? A) Mutations are novel genes that increase an organism’s fitness in the environ
Fed [463]

Answer:

Option C

Explanation:

Option A is incorrect as mutations may be detrimental to the organism and are not always beneficial. Option B is incorrect as there are instances where mutations may enable organisms to be better adapted to the environment. Option D is incorrect as genotypes are not selected for or selected against by environmental pressures, it is only the phenotype (exhibitable/ visible traits) that can be selected for or against, hence option C is the answer.

5 0
3 years ago
In pea plants, flowers are either white or purple; the purple color is produced by pigments called anthocyanins. The production
Hoochie [10]

Answer:

7/16

Explanation:

<em>The proportion of the offspring from the cross that will have white flowers is 7/16.</em>

The presence of anthocyanin which determines purple coloration is conditioned by the C_ and P_ alleles. It means that the absence of one or both of C and P will result in white flowers.

Two plants, each with CcPp are crossed:

CcPp   x   CcPp

Offpring

1 CCPP - purple

2 CCPp - purple

2 CcPP - purple

4 CcPp - purple

2 Ccpp - white

1 CCpp - white

1 ccPP -  white

2 ccPp - white

1 ccpp -  white

Proportion of offspring with white flowers = 7/16

Proportion of offspring with purple flower = 9/16

<em>See the attached image for the Punnet's square analysis of the cross.</em>

6 0
3 years ago
What main sub layer of the earth does all the action take place at?
Stella [2.4K]
The Earth can be divided into one of two ways – mechanically or chemically. Mechanically – or rheologically, meaning the study of liquid states – it can be divided into the lithosphere, asthenosphere, mesospheric mantle, outer core, and the inner core. But chemically, which is the more popular of the two, it can be divided into the crust, the mantle (which can be subdivided into the upper and lower mantle), and the core – which can also be subdivided into the outer core, and inner core
8 0
3 years ago
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