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3 years ago

Which molecule carries the instructions for producing mrna?

Biology

2 answers:

grandymaker [24]3 years ago

7 0

DNA carries the instructions for making mRNA

babymother [125]3 years ago

6 0

Answer:

c. DNA

Explanation:

DNA is the molecule which has instructions in the form of nucleotides to form mRNA. Synthesis of mRNA is primarily required so that protein could be synthesized. Before protein could be synthesized, some mRNA molecules like mRNA, tRNA and rRNA are synthesized by using one of the DNA strands as a template and subsequently these mRNAs collectively lead to the synthesis of proteins. The synthesis of RNAs from DNA molecule is known as transcription while synthesis of proteins with the help of RNAs is known as translation.

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The Big Bird lineage became reproductively isolated from G. fortis. Describe one prezygotic mechanism that likely contributed to

tigry1 [53]

Answer:

Beak shape/size or song or behavior or mechanical/chemical differences or time of mating or location on the island or primary food source differs between the Big Bird lineage and G. fortis.

Also acceptable: Description of another mechanism that prevents males and females from different populations from encountering each other/recognizing each other as potential mates.

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2 years ago

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soldier1979 [14.2K]

Answer:

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Explanation:

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3 years ago

Testosterone directly affects the

Bas_tet [7]

1. formation of a zygote

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3 years ago

Put the events of keratinization in order.

vodka [1.7K]

Answer: A. Accumulate keratohyalin granules. B. Cells increase in size, some retain ability to divide. C. Cell membrane thickens. Cells imbedded in lipid matrix. D. Cells within this layer proliferate.

Explanation:

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4 years ago

In a plant, leaf color and leaf shape are controlled by two linked genes Leaves of the wild-type plant are red. A recessive muta

Brrunno [24]

Solution :

Red is dominant over the white leaves and pointed is dominant over smooth.

Red = R , white = r

Pointed = P , smooth = p

Red, pointed x white,smooth ------ Parents

RRPP rrpp

RP rp ----------------- Gametes

RrPp -------- $F_1$

(red, pointed)

When this $F_1$ is test crossed,

RrPp x rrpp ---- $F_1$ test cross

Gametes → rp

RP ---------- RrPp - red, pointed - 36 parental type

Rp ---------- Rprp - red, smooth - 14 re- combination

rP ----------- rrPp - white pointed - 10 re- combination

rp ----------- rrpp - white, smooth - 40 - parental type

Total = 100

As this ratio is deviating from 1:1:1:1, it indicated the two genes are linked.

Linkage strength = percentage of crossing over = map distance between the genes.

Percentage crossing = recombination frequency = percentage of recombination.

Recombination frequency $=\frac{\text{total no. of recombination}}{\text{total no. of progeny}}\times 100$

$=\frac{14+10}{100} \times 100$

= 24 %

= 24 map units

4 0

3 years ago