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Ostrovityanka [42]
3 years ago
10

Gene expression might be altered at the level of post-transcriptional processing in eukaryotes rather than prokaryotes because o

f which of the following?a.Eukaryotic mRNAs get 5' caps and 3' tails.b.Prokaryotic genes are expressed as mRNA, which is more stable in the cell.c.Eukaryotic exons may be spliced in alternative patterns.d.Prokaryotes use ribosomes of different structure and size.e.Eukaryotic coded polypeptides often require cleaving of signal sequences before localization
Biology
1 answer:
Katarina [22]3 years ago
8 0

Answer:

c. Eukaryotic exons may be spliced in alternative patterns.

Explanation:

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What do male and female gametophytes produce, respectively?
Natasha_Volkova [10]
The spores produce two types of gametophytes: each microspore develops into a microgametophyte (male gametophyte), which ultimately produces male gametes (sperm), and each megaspore produces a megagametophyte (female gametophyte), which ultimately produces female gametes (eggs).
3 0
3 years ago
Cacti are native to deserts in the Americas, whereas cactus-like euphorbs are native to African deserts. The two plant groups ar
REY [17]

Answer: Convergent evolution

Explanation:

The convergent evolution is a process by which the unrelated or not closely related organisms independently evolve with same traits as a result of being exposed to the same kind of environment or having the same ecological niches. These organisms are linked due to common ancestry.

The given situation is the example of convergent evolution, this is because of the fact that both species (Cacti and cactus-like euphorbs) are native plants of different countries. These species are not closely related but they are sharing common ancestral characteristic with Christmas poinsettia.

5 0
3 years ago
Round pea allele R is dominant to wrinkled pea allele r, while yellow pea allele Y is dominant to green pea allele y. Homozygous
allsm [11]

Answer:

RrYy (F1 generation)

Explanation:

This is a typical dihybrid cross involving two genes in the pea plant; one coding for seed colour and the other for seed shape.

According to Mendel's law of dominance, an allele is capable of masking another allele in a gene, the allele that masks or is expressed is called the DOMINANT allele while the allele being masked is called RECESSIVE allele.

Homozygosity of a gene refers to it having the same type of alleles while heterozygosity refers to having different alleles.

In this example, allele for Round (R) and Yellow (Y) pea is dominant over the allele for Wrinkled (r) and green pea respectively.

Homozygous round green pea (RRyy) crossed with Homozygous wrinkled yellow (rrYY) will give rise to a heterozygous round yellow (RrYy) F1 offsprings.

4 0
3 years ago
1 gallon = 3.8 liters    1 mile = 1.6 kilometers   1 inch = 2.54 cm 1 cm = 10 mm
lorasvet [3.4K]

Answer:

8.327906

Explanation:

1 gallon [US, liquid] to litres = 3.78541 litres

5 gallon [US, liquid] to litres = 18.92706 litres

10 gallon [US, liquid] to litres = 37.85412 litres

15 gallon [US, liquid] to litres = 56.78118 litres

20 gallon [US, liquid] to litres = 75.70824 litres

25 gallon [US, liquid] to litres = 94.6353 litres

30 gallon [US, liquid] to litres = 113.56235 litres

40 gallon [US, liquid] to litres = 151.41647 litres

50 gallon [US, liquid] to litres = 189.27059 litres

we could tell that 2.2 gallons are in between 8.327906 litres

7 0
3 years ago
The template DNA for the leading strand is easier to unwind than the template DNA for the lagging strand.
Rom4ik [11]

Answer:

B. False

Explanation:

Prior to the replication of a DNA strand or molecule, the double stranded DNA molecule needs to be unwound i.e. separated into two single strands. One strand called the LEADING STRAND that runs from the 3' - 5' direction while the other strand called the LAGGING STRAND runs from the 5' - 3' direction.

The unwinding of the DNA template is carried out by an enzyme called DNA HELICASE, which binds to the DNA molecule and unwinds the double strands into two strands at the same time. This means that the unwinding into leading or lagging strand is not easier than the other since it occurs simultaneously, hence, this question is FALSE.

3 0
3 years ago
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