Answer:
44
Explanation:
A somatic cell is diploid - it has 46 chromosomes. Half of these are from the mother, so there are 23 maternal chromosomes
A sex cell (gamete) is haploid - it has 23 chromosomes. There are (usually) two sex chromosomes in a diploid genome, either XX or XY, so there is one 1 in a haploid cell, giving a total of 22 autosomes
Barr bodies are inactive X chromosomes in a female somatic cell. This occurs to control dosage compensation (otherwise all the genes on the X in females would be expressed twice as much as they are in males). In a healthy female, there is normally one Barr body
A person with Kleinfelter's syndrome has two X chromosomes and one Y (XXY). They are biologically male, but have two X chromosomes. Therefore, one of these becomes a Barr body, as in females.
23 + 22 - 1 = 44
Reproductive system and it's functions
Answer:
OMG ive done this!!!!!!...
the instructions for the egg and sperm one are down there mine was not very good maybe yours will be a bit better loll
B. Populations are a group of the same species in a place at the same time.
Answer:
There are 2 enzimes required for this metabolic pathway.
Explanation:
In living beings, enzymes act specifically on a substrate with which they have affinity.
In the aforementioned problem, there is an enzymatic reaction on two substrates to form products, therefore, there are 2 enzymes acting on said substrates.
