Biology Answers

Two plants with the genotypes TT and Tt _________________.
a. would have the same phenotype. c. would have different phenotypes.
b. have all dominant alleles d. have all recessive alleles.

In blood types, the alleles for A (IA) and B (IB) antigens are codominant to the recessive allele (i) for no antigens. Also, the allele for the presence of the Rh factor antigen (Rh + ) is dominant over the allele for the absence of Rh factor antigen (Rh - ). If a A+ parent, heterozygous both traits , is crossed with B + parent, also heterozygous for both traits, what are the resulting F1 phenotypes?

Cytological basis of crossing over

Discuss about arrhythmia heart condition.
1. What the condition is?
2. How it develops and
3. How the condition can be prevented.

What is a karyotype ? Explain with any two
examples how it is useful in biosystematics.

Which of the following is not the importance of the homeostasis mechanism in a human?
A. To control the exchange of gases through the respiration system
B. To control the waste content
C. To control the balance of the blood osmotic pressure
D. To regulate the body temperature at the normal level

Litego school of biology student used a microscope with ×40 objective lens and ×15 eye piece lens which had a 2mm radius. Calculate the area of the field of view in micrometers

Genetic Problems: It may be difficult to do the Punnett Squares to hand in on the answer sheet. Therefore, for the following problems, work them out on scrap paper and only place the answers asked for on the answer sheet.
13. Cystic fibrosis is inherited as an autosomal recessive trait. If a woman carries the trait marries a normal male who does not carry the trait, what are the chances that any of their children will have the disease?
0%
14. In peas, tall is dominant over short and smooth seed dominant over rough. Cross a tall rough plant with a short smooth plant.
A. On the answer sheet, write down the genotypes of the parents.

B. From this cross, could any short rough offspring be produced?

DEFINE THE FOLLOWING:
1) MENTAL HEALTH
2) ANAEMIA
3) ASTHMA
3)HEALTH EDUCATION
4) OBESITY

DESIGN SHORT HEALTH MESSAGES (LESS THAN SEVEN WORDS) FOR POSTER PRESENTATION,
TO BE USED FOR THE PREVENTION OF THE FOLLOWING CONDITIONS:
1)CIGARETTE SMOKING
2)CANCER OF THE BREAST
3)HYPERTENSION
4)ROAD TRAFFIC ACCIDENTS
5)DIABETES MELLITUS

a) DEFINE PRIME HEALTH CARE

In which calluses did the new gene insert inside an existing corn gene