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2 years ago

A strand of DNA has the sequence GATTACA. what will the sequence of the complementary strand of DNA?

Biology

1 answer:

insens350 [35]2 years ago

4 0

Answer:

CTAATGT i believe.

Explanation:

A=T

C=G

G=C

T=A

If you replace GATTACA with these complementary parts/letters, etc. you will get your answer!

Hope this helps!

Tip: The only thing that changes when finding an RNA strand is that there is Uracil (U). So when finding a complementary RNA strand A=U while everything else is the same.

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The xx and xy sex chromosome shape is common to both ?

Marysya12 [62]

No one is for females and one is for male chromosomes

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3 years ago

The deep palmar veins drain into the radial and ulnar veins; then those veins, along with the anterior crural interosseous vein,

galina1969 [7]

Answer:

Brachial vein.

Explanation:

Veins may be defined as the blood vessels that carries the blood towards the heart. The main function of the vein is to carry the deoxygenated blood into the heart.

Brachial vein is the deep veins that has the name as their arteries occupy. The brachial veins receive their blood from the palmar veins with the interosseous vein. The brachial veins include the ulnar vein, radial vein in upper limb and lower limb consists of popliteal veins.

Thus, the answer is brachial veins.

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3 years ago

Which of the following does not have an effect on enzyme activity?

ziro4ka [17]

Shape of active site

8 0

2 years ago

PLZ HELP ME Question 3

Flauer [41]

Answer:

It's impossible to predict the phenotype of the offspring by only observing the parents because DNA from their grandparents can affect the offspring as well.

Explanation:

DNA is combined from the parents to create offspring. When that offspring reproduces their children not only possess DNA from their parents but from their grandparents as well. Mixing together two separate DNA's from two different family trees can result in rare genetic mutations which results in the offspring looking different from their parents but showing resemblance to their grandparents. This is why you have to look at the phenotypes of more then just the two parents because there are more possibilities, including what their grandparents looked like.

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2 years ago

Toemas’s syndrome is a autosomal dominant disease, homozygous lethal, seen at a frequency of 1 in 10,000 cats. Felines with this

Anastaziya [24]

Answer: 50% or 25% according to the genotype of the male cat.

Explanation:

The female cat is unaffected, and since this is an autosomal dominant diease, it means this cat does not have any affected alleles. Thereby, its genotype is aa. This is because dominant alleles show their effect even if the organisms only has one copy of the allele. The male cat is affected with this syndrome so its genotype is either AA or Aa. For this disease to manifest itself, only one affected allele is needed. Although both alleles can be affected so the individual can be homozygous dominant or heterozygous.

To find this we have to do a punnett square. Here, we use the gametes produced by each individual. Gametes are sex cells, egg or sperm, which only have one allele of each gene.

Assuming that the cross is between aa and AA, the gametes produced by "aa" are "a", and the gametes produced by "AA" are "A" So we are having a cross between an "a" gamete and a "A" gamete. 100% of the offspring will be Aa so it is a heterozygous, which will develope this syndrome. And, males have one Y chromosome and one X chromosomes, thereby the chances of having a male kitten is 50%. Then, to conclude, there is a 50% chances of having a male kitten with this syndrome.

And, assuming that the cross is between aa and Aa, the gametes produced by "Aa" are "A" but also "a" So we are habing a cross between an "a" gamete and "A" or "a" gamete (See picture) In this example, there is a 50% chances of having a kitten with the syndrome, because only one genotype produced (Aa) has the affected allele. And, as we said before, since there is a 50% chances of having a male kitten, we can said that there is a 25% chances of having an affected male. Because to calculate both probabilities so that they occur simultaneously, it is necessary to multiply them. That is, 0.5 x 0.5 = 0.25 x 100 = 25%.

8 0

3 years ago