Answer:
D. Aa
Explanation:
Given:
Jill (mother) is heterozygous for gene A --------- i.e Jill = Aa
Jack (father) who is homozygous recessive for gene A-------- i.e Jack = aa
Now if both cross and fertilization occurs, we have:
A a
a Aa aa
a Aa aa
The offsprings are (Aa, Aa, aa, aa)
Nondsijunction is the inability of homologous chromosomes to seperate properly during cell division. Now, we were told that this fertilization undergone nondisjunction in meiosis 1. Hence, both homologous chromosome move into the same daughter cells instead of different daughter cells because separation of homologous chromosome does not occur properly.
Therefore the result of these fertilization of a normal haploid sperm with an egg that had undergone nondisjunction in meiosis yields offspring with genotype Aa of their Mother (Jill).
Answer:
Collagen, elastin, fibronectin, and laminin are the four principle classes of fibrous proteins found in the extracellular matrix. Fibrous proteins add tensile strength to tissues but provide much of their stretchiness, as well
Explanation:
Hope this help
plz mark brainliest
Have a nice day!!
Answer:
Weight gain and depression are symptoms caused by imbalance of pituitary and adrenal glands and the cortisol hormone.
Explanation:
The pituitary gland is responsible for the overall functioning of the body since it produces a variety of hormones. It is very small in size and is also known as the 'master gland'. It is made of two parts- <u>anterior pituitary gland and posterior pituitary gland</u>. The pituitary gland and its functions are controlled by the hypothalamus.
The anterior pituitary secretes hormones which act on adrenal glands, thyroid, testes and ovaries. The hormones produced are <em>TSH, Prolactin, Luitenizing Hormone, Cortisol, Testosterone</em>, etc.
Cortisol is produced by the <u>adrenal gland</u> under the command of <em>pituitary gland</em>. Cortisol helps in <em>regulating blood sugar, blood pressure</em> and helps in reducing inflammation. Any imbalance of adrenal gland will cause an increase or decrease in the production of cortisol. The symptoms produced on the imbalance are:
- Obesity in upper body
- High blood pressure
- Mood swings, depression and irritability
- Acne and other skin problems.
I believe the primary determinant of basal metabolic rate is the Lean Body Mass. Basal metabolic is the rate of energy expenditure per unit time by animals at rest. It comprises the processes that the body requires to function. It is the amount of energy per unit time that a person need to keep the body operational at a state of rest.
Tony suffers from a disease in which myelin is progressively lost. Tony's axons will increasingly lack insulation. The myelin is a protective barrier that would surround the axons. Its primary function is to insulate and protect the axons and also increase the effectivity of transmission of the impulses. The decrease in the amount of such would decrease protection, insulation and the enhancement of transmission.
