Biology Answers

With regard to the HLA-A and HLA-B antigens complete the genotypes, haplotypes and decide if the marked man can be the biological father of the child:

Phenotype of mother:HLA-A2,32; B13,35 : What genotypes and haplotypes does she
have?

Phenotype of child: HLA-A1,32; B8,35 :What genotypes and haplotypes does the child
have?

Phenotype of marked man: HLA-A2; B7,13 :What genotypes and haplotypes does he have?
Can he be the biological father of the child?

If 1st heart sound is from the closure of the AV valves and the 2nd heart sound from the closure of the semilunar valves, why can we hear both sounds in all 4 areas?

Differentiate between passive and active transport?

Evaluate why there is a need for blood to be redistributed when an athlete begins to participate in a physical activity such as swimming

How do the different types of isolating mechanisms facilitate speciation?

Can you explain why the pulmonary valve (issuing from the right heart) is heard most clearly to the left of the sternum and the aortic valve (issuing from the left heart) is best heard at the right sternal border.

What is the aim of setting up National Parks and Botanical Gardens?

Write: A friend tells you he is 30m from the fountain in the middle of the city. Write a one page paper explaining why you cannot identify your friend's position from this description. Students should explain that you cannot identify the friend's position because you also need to know which direction the friend is relative to the fountain.

What is the closest living relative to Leedsichthys?

True or false. Mitosis is a type of reproduction in cell..... a zygote is a diploid cell