Later the nervous system signals the endocrine system to stop releasing the hormone when the body does not need anymore. this is called negative feedback. The nervous and endocrine systems work together when the endocrine system stimulates the brain, which in turn stimulates hormone-producing organs Cheers -Irys
The provided question is incomplete as it lacks the combinations of parent as metion in the question, however the complete question is attached as the image.
Answer:
There are two parent combinations that are :
1. heterozygous black Ff cross with heterozygous black Ff
2. heterozygous black Ff cross with white ff
Explanation:
1. in first combination the each parent will produce F and f gametes, as it is shown as Capital F so it will be dominant over f as per the rule. so the cross can be shown as :
F f
F FF Ff
f Ff ff
where, FF are black Ff black and ff white offspring. As there is clearly 3 black offspring over one white spring so the ratio is 3:1 or 75% chances of black and 25% chances of white offspring (phenotype).
2. in second combination there would be F and f gametes for black parent and f and f for white parent, thus the offsprig would be :
F f
f Ff ff
f Ff ff
As, there is two black and two white springs are produced than the ratio would be 2:2 or 50% chances of each white offspring and black offspring (phenotype)
Ultraviolet radiation may increase when there is an increase in sunspots
Answer:
Protista (or protists) are found in toothpaste, and can possibly cause malaria