The question is incomplete as it does not have the options which are:
A) Tomas' family is of Asian descent.
B) Tomas' family members with sickle cell anemia have a defect in the structure of the protein chains of hemoglobin.
C) Tomas' family historically has consumed a low-protein diet.
D) All of the above are true.
Answer:
Option-B
Explanation:
Sickle cell anaemia is a disorder which is caused by the mutation of the sequence of the DNA which codes for haemoglobin.
The mutation takes place at sixth position in which the glutamic acid codon is changed to valine codon. This mutation changes the shape of the hemoglobin.
This mutation changes the shape of the haemoglobin molecule from circular ellipsoidal to sickle shape and thus reduces the amount of oxygen in the blood.
In the given question, if the person studies that many family members of Thomas have this disease therefore it can be predicted that the haemoglobin protein in them will be changed to a sickle shape.
Thus, Option-B is correct.
1. Both ways of reproduction result in an offspring, but 2 organisms of opposite genders are needed for sexual reproduction and the offspring produced is similar to both parents, meaning they share some of the genes of both parents. In asexual reproduction, only one parent is needed and the offspring is identical to the parent, meaning the offspring shares the exact same genes as the parent.
2. both alleles contain genetic code for the same trait, just different versions. But recessive traits are only shown if the offspring recieves the same recessive gene from both parents, whileoffspring only need one dominant allele for it to be expressed
3. Chromosomes and alleles have genes for traits, but Chromosomes contain the genes of the offspring, while the alleles are the gene version for a specific trait.
4. Both mitosis and meiosis produce cells, but mitosis is the process to produce two identical normal cells with the same genes, while meiosis is the process to create two reproductive cells, each with 1/2 of the genes from the parent cell.
LOL, but I'm having this lesson in my science class as well, so I understand.
Answer:
coal is the source of energy and it is formed in the dark mines and there are the fossiles of the ancient tree and animals ect
2. we use the coal in everywhere coal is used in industry and also for petrol and this is very low source on earth
hope ur help and mark me brainlist
An oxidation-reduction<span> (</span>redox<span>) </span>reaction<span> is a type of chemical </span>reaction<span> that involves a transfer of electrons between two species. An </span>oxidation-reduction reaction<span> is any chemical </span>reaction<span> in which the </span>oxidation<span> number of a molecule, atom, or ion changes by gaining or losing an electron.</span>
Answer:
Explanation:The head louse, or Pediculus humanus capitis, is a parasitic insect that can be found on the head, eyebrows, and eyelashes of people. Head lice feed on human blood several times a day and live close to the human scalp. Head lice are not known to spread disease.