Answer:
Euglena are classified into the Kingdom Protista, and the Phylum Euglenophyta.
Explanation:
Answer:
Blood taken from an artery in the leg is oxygenated while blood taken from a vein in the leg is deoxygenated.
Answer:
A) Horner's syndrome
Explanation:
Horner's syndrome:
Horner syndrome occurs due to damage of nerve pathway from brain to eye and face.
In this condition particularly damage one side of the face and eye of the patient.
Symptoms:
Its symptoms include:
- Miosis (pupil will become small)
- ptosis (upper eyelid will drooping)
- anisocoria (pupil size will be physically different between two eyes)
- anhidrosis (there will be no sweating or little in rare cases)
So, The above mentioned condition proves the presence of Horner's syndrome.
Correct question:
if a nondisjunction occurs at anaphase I of the first meiotic division, what will the proportion of abnormal gametes (for the chromosomes involved in the nondisjunction)?
Answer:
100%
Explanation:
Nondisjunction at meiosis-I means that two homologous chromosomes of at least one homologous pair fail to separate from each other during anaphase-I. This would result in the formation of one cell with one extra chromosome and the other with one less chromosome by the end of meiosis-I. Meiosis-II in these two cells would maintain this chromosome number in the daughter cells. Therefore, out of the total four gametes formed by the end of the meiosis, two would have one extra chromosome and would be denoted as "n+1". The rest of the two gametes would have one less chromosome and would be denoted as "n-1".
