Answer:
Darkened shapes are recessive
Explanation:
In the pedigree shown, we can see that 2 parents that are unshaded shapes have 2 children that are shaded shapes. This would be impossible if shaded shapes were dominant and unshaded shapes were recessive. This is because parents that have a recessive trait have 2 of the same alleles. So if 2 parents that both have a recessive trait have a child, the child will definitely have that trait. But we can see that this is not the case, the parents have 2 offspring that have different phenotype from the parents. This must mean the parents are heterozygous, meaning that they both have 2 alleles that are different. The dominant allele masks the recessive allele, so the dominant allele is expressed. In this case, the children inherited 2 recessive alleles, 1 from each parent, making them have a different phenotype from the parents.
Answer:
D. Because you get the same number of chromosomes from both parents
Explanation:
It is a theory supported by overwhelming scientific evidence.
The immune response is the body's defense mechanism against the pathogens. The immune response of the body protects it from bacteria, viruses and multiple other disease causing organisms. The normal development of this protective immune response of the body is produced by as a result of the hormones which are produced by the thymus gland. The thymus gland produces the T-lymphocytes, which are important for a healthy immune response. The thymus gland secretes thymosin which is crucial for the development of these cells.
Hence, the answer is 'thymus gland'.
Answer:
The preferable option will be - B.
B. A 28-year-old anorexic female
Explanation:
- Anorexia is simply known as an eating disorder.
- Losing weight, fear of gaining weight, and a strong desire to be thin are the most popular symptoms.
- Some genetic problems, some social connection factors from the glamour world, athletics, etc. But the exact accurate cause is still unknown.
- Some complications are seen such as osteoporosis, infertility, heart damage, and menopause.
The BMI categories are -
- Mild disease - greater than 17,
- Moderate disease - 16 to 17,
- Severe disease - 15 to 16,
- Extreme disease - less than 15.
