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4 years ago

7

Each population of squirrels evolved different adaptions for each side of the canyon and eventually became genetically different

populations. This is an example of which stage of speciation?

2 answers:

Monica [59]4 years ago

8 0

This is an example of natural selection.
(please mark brainliest)

mihalych1998 [28]4 years ago

4 0

I'd say it is natarul selection

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3 years ago

Tropical rainforests have the greatest biodiversity of any type of land ecosystem how does biodiversity contribute to the sustai

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2 years ago

Carbon dioxide is a compound that is made up of __bonds and, therefore, has melting and boiling points that are generally __. A)

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3 years ago

) 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

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3 years ago

________ is an example of a food whose nutritional value has been modified so that it contains more vitamin a and iron.

Liono4ka [1.6K]

This is called golden rice.

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4 years ago