Sunday, February 7, 2010

Please help me with these trum or false questions from biology?

1-Reassortment of chromosomes can occur during mitosis by crossing over of nonsister chromatids or by independent segregation of homologous chromosomes.


2-Genetic recombination is a major source of variation among organisms.


3-The ramdom segregation of chromosomes during meiosis explains Mendel's observation that genes for different traits are inherited independently of each other.


4-nondisjunction ALWAYS results in a zygote with an extra chromosome.


5-Mistakes in meiosis can never be beneficial.


FOR THE REST OF THEM IF THEY ARE FALSE CHANGE THE WORD SO IT WILL BE TRUE


1- Traits controlled by more than two alleles are said to have multiple alleles.


2- Multiple alleles can be studied only in humans.


3- In humans there are 23 pairs of matching chromosomes called autosomes.


4-There are two chromosomes called sex chromosomes that determine the sex of an individual.


5-A child whose parents both have type o blood can have only type o blood.


6- the first example of sexlinked inheritance pea pPlease help me with these trum or false questions from biology?
1 T - independent segregation = independent assortment?


2 T - During meiosis, recombination of genes give rise to variation


3 T


4 F - an extra ploidy of chromosomes sometimes (e.g. Alloploidy)


5 F - Never is an absolute word





1- T


2- cancel ';only';


3- 22 pairs


4- T


5- T (Blood Type O is recessive in alleles)


6- F (Common answer was White eye mutation in Drosophila flies)Please help me with these trum or false questions from biology?
maybe I should get a few questions wrong on purpose just to screw up whatever assignment you seem to be doing.





1. F


2. depends on what type of organisms you refer to. If you refer to diploid organisms then T


3. T


4. F


5. define ';mistake';.. based on my definition of ';mistake'; then T





your second part questions 2 %26amp; 3 are false.

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