Biology Answers

Short-term autoregulation of blood flow occurs at the level of ------------

Freckles are dominant to no freckles. If a heterozygous mom and a homozygous dominant dad were crossed together how would that cross be written?

Inheritance of Blood Type

Blood typing is determined genetically, based on the alleles inherited from either parent. There are three possible alleles that can be inherited, Ia, Ib and Io. Ia and Ib are codominant, whilst Io is recessive to both Ia and Ib.

As a result, someone with blood type AB has inherited Ia from one parent and Ib from the other, resulting in both a and b antigens present on their blood cells.

Someone with Ia blood could have inherited Ia from one parent, and either an Ia or Io allele from the other parent.

Since Io is recessive to both Ia and Ib, the only way a person can have O-type blood, and have no antigens present on the blood cells, would be for them to have inherited Io alleles from both parents.

Mix-up at the Hospital

Two sets of parents had babies on the same day at approximately the same time, at a local hospital. Somehow the hospital nursery may have mixed up the babies, and it is your job to determine which child belongs to which set of parents using your knowledge of blood type inheritance and genetics.

Use punnett squares to determine the possible offspring blood types for each set of parents, to help with your answers.

question 6:

Mr Jones has blood type A, select the possible genotype/s that would result in this blood type.

Question 6 options:

A) Io Io

B) Ia Io

C) Ia Ia

D) Ia Ib

E) Ib Io

F) Ib Ib

I think this answer is B based on the above info.... is this correct?

Mrs Jones has blood type O, select the possible genotype/s that would result in this blood type.

Question 7 options:

A) Io Io

B) Ia Io

C) Ia Ia

D) Ia Ib

E) Ib Io

F) Ib Ib

a?

Just let me know if my 2 answers are correct or not thanks.

-What are cryoprotectors

- why use them

Calcule ΔU_rxn (kJ/mol) a 298,15 K para la siguiente reacción:

CH₃OH (g) + CO (g) → CH₃COOH (l)

Genes are copied then the copy I sent outside the nucleus for translation into a protein

which part of the cell does cell transport occur

• Briefly summarize the processes of mitosis and meiosis indicating where the similarities lie and in which aspects they differ. Don't forget to mention the primary reason for each type of cell division by indicating the roles that mitosis and meiosis play in human reproduction and development.
•  Explain what is meant by the term ‘linked genes’ with respect to homologous recombination. For example, if an organism is heterozygous at two genetic loci on the same chromosome, in what way does the position of these alleles with respect to each other affect how they are transmitted to gametes during meiosis?

Discuss the role which Neutrophils play in inflammatory diseases?

Describe two major pathways activated by insulin and the signalling mechanisms undermining their activation?

You would describe the cells from which insulin is secreted and state the overall role of insulin in the body. In signalling pathways, each signal molecule has a receptor that it binds to, so you would indicate what the receptor for insulin is called and what immediate outcome the binding of insulin has to that receptor i.e.