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Tamiku [17]
3 years ago
14

Please help me I dont know the answer

Biology
1 answer:
Delvig [45]3 years ago
3 0
Rh antigen.

The chart shows that for A and B antigen there is no reaction so the correct answer will be Rh antigen.
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How do you think scientist know the carnivore was chasing pleurocoelus?​
Stells [14]

Answer:

Explanation:

in 600 bc carnivores began to chase for pleurocoelus because they realized it was great for their immune systems therefore they chased after them a lot.

5 0
3 years ago
Earth's ______ causes the Coriolis effect.<br> •winds<br> •rotation<br> •temperatures
Sholpan [36]

  • B) Rotation

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Earth's rotation causes the Coriolis effect.

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6 0
3 years ago
Read 2 more answers
Which of the following statements best describes the behavior of DNA during electrophoresis?
Vinvika [58]

Answer:

Migration distance is inversely proportional to the fragment size,

Explanation:

Gel electrophoresis is a technique used in molecular biology that uses electricity to separate biological molecules based on size (DNA) or charge (proteins). For the DNA molecule, different sizes are separated from one another based on how fast they can migrate through the gel matrix.

In this technique, small fragments or sizes of DNA migrates farther than long sizes of DNA due to low friction in the matrix. In other words, the smaller the size of the DNA fragment, the farther the migration distance and vice versa. This shows that an INVERSE RELATIONSHIP exists between the migration distance and the fragment size in the electrophoresis procedure.

8 0
3 years ago
A population of Muscovy ducks contains 13 birds with black masks and 37 birds with red masks. Red masks are the dominant trait.
Semmy [17]

Answer: Black allele has frequency of 0.14.

              Red allele has frequency of 0.86.

             The frequency of heterozygotes is 0.241

Explanation: <em>Hardy-Weinberg model </em>states the frequency of alleles in a population will stay in equilibrium as long as there are external influences. It is also used to determine alleles frequencies using the following equations:

p+q=1

p^{2}+2pq+q^{2}=1

p represents frequency of dominant allele;

q represents frequency of recessive allele;

2pq is frequency of heterozygotes;

For the frequency of red allele, which is dominant, we can use:

p^{2}=\frac{37}{13+37}

p^{2}=\frac{37}{50}

p^{2}=0.74

p=\sqrt{0.74}

p = 0.86

For the black allele:

p+q=1

q=1-p

q=1-0.86

q = 0.14

Frequency of heterozygotes is

2pq = 2(0.86)(0.14)

2pq = 0.241

<u>Frequencies for a population of Muscovy ducks are </u><u>0.86 for red allele, 0.14 for black allele and 0.241 for heterozygote.</u>

5 0
3 years ago
Scientists want to determine how closely related chimpanzees are to humans. Which data would give the most accurate comparison
charle [14.2K]
What are the choices
6 0
4 years ago
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