Answer:
The correct answer is - 3/16 or 18.75% portion will be resistant to both Bt and DDT.
Explanation:
It is given that bollworms that are susceptible to Bt are represented by either RR or Rr and resistance one are shown by rr genotype and bollworms that are resistant to DDT are represent TT or Tt genotype and susceptible to DDT have tt genotype.
Cross: RR tt with rr TT
Gametes: Rt and rT
F1 cross:
RT
rT RrTt ( susceptible Bt and resistant DDT)
F1 Cross with F1
Gametes: RT, Rt, rT and rt
cross:
RT Rt rT rt
RT RRTT RRTt RrTT RrTt
Rt RRTt RRtt RrTt RrTt
rT RrTT RrTt rrTt rrTt
rt RrTt Rrtt rrTt rrtt
The bold genotypes are the three out of 16 that are resistant to both DDT and Bt.
Answer:
Paramecium- 0 days/ 50 paramecium
5 days/400 paramecium
10 days/ 900 paramecium
15 days/ 860 paramecium
Bear- 0 days/ 2 bears
20 years/ 26 bears
40 years/ 230 bears
60 years/ 250 bears
80 years/ 248 bears
100 years/ 252 bears
Explanation:
The population of the paramecium will keep on increasing until an equilibrium is reached. The resources will become limited and hence, the paramecium will start competition for the limited resources. As a result, the population of the paramecium will decline rapidly after equilibrium.
The growth rate of bear is very less as compared to that of paramecium growth rate. Along with the growth rate, there are other factors which will be responsible for its numbers such as resources, hunters etc. Also, it uses sexual method of reproduction hence the growth rate will not be like the paramecium growth rate.
Answer:
Considering A is a picture of a fibrous joint, a suture on the skull, the true answer is c. It becomes ossified late in adult development
Explanation:
Fibrous joints are connected by dense connective tissue, consisting mainly of collagen. A suture is a type of fibrous joint that is only found in the skull (cranial suture). This specific type becomes ossified late in adult development and it is called craniosynostosis, when the fusion is before birth. These joints are synarthroses.
Answer:
its A.
Explanation:
theres 24 0s before the 167 and its before so its negative:) hope this helps
