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RUDIKE [14]
3 years ago
12

What are some things that should be checked before blood is transfused

Biology
1 answer:
daser333 [38]3 years ago
8 0
Cancer, other antigens, diseases, blood type
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A boatload of Swedish tourists, all of whom bear the MM blood group, is marooned on Haldane Island, where they are met by an equ
seropon [69]

Answer:

E.

Explanation:

The first filial generation, will have 4000MN, while the progeny of the new Haldane population will be in the second filial generation 1000 MM + 2000 MN + 1000 NN.

7 0
3 years ago
A mutagen is
Novay_Z [31]

Answer: The correct answer is-

an agent that causes a mutation in DNA.

Mutagen is an agent or a substance that causes permanent change in the genetic material of living organisms ( DNA, deoxyribonucleic acid). This process is called mutation.

A mutagen can be a chemical, physical or biological agent that causes mutation in the DNA.

Example- Physical agents such as -

  • Ionizing radiations like alpha particles, gamma rays,  X-rays that brings break in the DNA and cause other damages.
  • Ultraviolet radiations that creates pyrimidine dimers ( T=T) and causes replication errors if damage is not repaired.
4 0
3 years ago
Read 2 more answers
Which brain imaging technique records the oscillations of the brain's neurons?
mezya [45]
The brain imaging technique you refer to is the MEG.
8 0
2 years ago
Micah has straight hair. If he is homozygous for the gene that determines straight hair, what is true of his parents?
alexgriva [62]

Answer:

They have contributed same allele for straight hair.

Explanation:

There are two conditions homozygous and heterozygous. In homozygous conditions both the allele of a particular gene is same in an offspring which means the offspring got two same alleles from its parent for a particular gene and if an offspring is heterozygous for a gene that suggests that the parent has contributed two different alleles for that gene in the offspring.

So If Micah is homozygous for straight hair then it can be concluded that his parents have contributed two same alleles for straight hair genes.

3 0
3 years ago
Which method(s) can be used to join double-stranded breaks in DNA? (choose all that apply)
Amiraneli [1.4K]

Answer:

Option (a) and (d).

Explanation:

The breaks in DNA molecule may occur due to replication error and oxidizing agent. The double-stranded breaks in DNA can be corrected by Homologous end joining and non homologous end joining.

Homologous end joining is used to repair the DNA present in G2 nad S phases of the cell cycle. The homologous sequences of DNA is used to repair the DNA. Non homologous end joining occurs in the cell present at G0 and G1 phase of the cell cycle. The DNA broken ends are juxtaposed and later rejoin together by DNA ligase.

Thus, the correct answer is option (a) and (d).

3 0
3 years ago
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