What explanation is generally given for lethality of monosomic individuals?
A) The gametes of monosomic individuals cannot undergo meiosis, and this is lethal.
B) Monosomy may unmask recessive lethals that are tolerated in heterozygotes carrying the wild-type allele.
C) Cells count the number of chromosomes they have and will undergo apoptosis when the chromosome number is incorrect.
D) The loss of a single chromosome is not generally lethal, unless the individual is inbred.
E) Monosomic chromosomes cannot undergo mitosis correctly.
Answer: B
You might also like to view...
The structures used for motility in both eukaryotes and prokaryotes are
A. cilia. B. flagella. C. pili. D. fimbriae.
The 5S rRNA and tRNA genes have internal promoters, located downstream of the transcription start site, called ________
Fill in the blank(s) with correct word
The first cells were autotrophs, Indicate whether the statement is true or false
Your younger brother has cut himself with a rusty knife he found in the garden. The wound is not life threatening, but it is deep enough that it makes you concerned. You would ________
A) take him to an ER B) make an appointment with his primary health care provider C) take him to a DO D) make an appointment with his physician