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2 years ago

Refer to this portion of a dichotomous key to answer the question.

Biology

2 answers:

beks73 [17]2 years ago

8 0

On edgen.uity the answer should be A- sturgeon fish.

Aleks04 [339]2 years ago

4 0

From the dichotomous key, the result would be STURGEON FISH.
The sturgeon fish, according to the dichotomous key, has a single dorsal fin, has no fin on its back near the tail and it has a tail that is asymmetrical.
A dichotomous tree is a tool which is used to identify animals. It is made up of a series of choices which lead the user to the correct animal.

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) Consider a pea plant- it has a gene controlling seed color- yellow Vs green; another gene controlling seed texture-smooth Vs w

lana [24]

Answer:

Yellow smooth - 9

Yellow wrinkle - 3

Green smooth- 3

Green Wrinkle - 1

Explanation:

Let the green color of the seed be depicted by "G" and the yellow color of the seed be depicted by "g"

Let the smooth the seed be depicted by "R" and wrinkled seed be depicted by "r"

F1 cross -

true breeding smooth green plant ( RRGG) and true breeding wrinkled yellow (rrgg)

F1 gamete will be RG, RG, rg, rg

F1 offspring will be RrGg , Thus all F1 offspring will be heterozygous smooth and yellow.

Thus, R is dominant over r and g is dominant over G

F2 Generation –

RrGg x RrGg

Gametes will be RG, Rg, rG, rg

RG Rg rG rg

RG RRGG RRGg RrGG RrGg

Rg RRGg RRgg RrGg Rrgg

rG RrGG RrGg rrGG rrGg

rg RrGg Rrgg rrGg rrgg

R is dominant over r and g is dominant over G

Genotypes are –

RRGG - 1 (Smooth Green)

RRGg-2 (Smooth yellow)

RrGG-2 (Smooth Green)

RrGg-4 (Smooth yellow)

RRgg- 1 (smooth yellow)

Rrgg – 2 (Smooth yellow)

rrGG – 1 (wrinkled Green)

rrGg – 2 (Wrinkled yellow)

rrgg – 1 (wrinkled yellow)

Yellow smooth - 9

Yellow wrinkle - 3

Green smooth- 3

Green Wrinkle - 1

4 0

2 years ago

State three functions of the cell membrane

Bond [772]

Answer: A Physical Barrier. ...

Selective Permeability. ...

Endocytosis and Exocytosis. ...

Cell Signaling. ...

Phospholipids. ...

Proteins. ...

Carbohydrates. ...

Fluid Mosaic Model.

Explanation: Have a good rest of the day.

5 0

2 years ago

1) Tides are caused by A) gravity. B) heat. C) waves. D) winds.

Ulleksa [173]

Answer:

Gravity

Explanation:

Tides are caused by gravity

8 0

2 years ago

Read 2 more answers

Mount st. helens and the other cascade volcanoes are ________.

scoundrel [369]

Hello There!

I've had this question before so i know the answer is:

Mount st. Helens and the other cascade volcanoes are young, active volcanoes built on a continental margin above a sinking slab of oceanic plate.

Hope This Helps You!
Good Luck :)

- Hannah ❤

6 0

3 years ago

Read 2 more answers

If you DNA has two strands is it possible to determine the other with the other?

Westkost [7]

You should know the Thymine pairs with Adenine and that Cytosine pairs with Guanine. If you know what one of the Letters are (A,T,C, or G), then you can easily figure out the other letter. A trick is that Adenine pairs with Thymine and they are straight figures like the letter "A" and the letter "T". Guanine and Cytosine have the letters "C" and "G" and both of them are curvy and not straight. This helps you identify the other nucleotide if you know one of them.

4 0

2 years ago