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vladimir2022 [97]
2 years ago
8

if a human has an extra copy of one pair of homologous chromosomes, how many chromosomes will she have in total?

Biology
1 answer:
earnstyle [38]2 years ago
8 0
The DNA has replicated so there is a double copy of each of the 46 chromosomes (23 pairs of homologous chromosomes).
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The four major components of the earth's crust are:
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Inner core, outer core, mantle and crust
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Scientist have evidence that media right have come from which location
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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
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Answer:

Yellow smooth  - 9

Yellow wrinkle - 3

Green smooth- 3

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Explanation:

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

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F1 cross -  

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

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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
Which characteristic sets streams and rivers apart?
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size hence streams  are little and rivers are bigger than streams because a stream connects between two or more rivers

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