1
vote
1answer
13 views
How does x-inactivation affect the expression of traits that a female carries?
Consider a female who is a carrier of a disease. Does she express the traits of this disease at all? I'm confused by x-inactivation - couldn't it mean that ~50% of a carried trait …
1
vote
2answers
40 views
How did the examiners reach this conclusion
First of all, how did they even come to the conclusion that yellow was dominant?
Also, in the parental cross what is 'x'?
Why us the parental cross genotypes showing anything oth …
2
votes
1answer
14 views
Translocation of homologous vs non-homologous chromosomes
How does the translocation of non homologous chromosomes indicate that there may be a genetic defect whereas homologous chromosome translocations are normal in everyone!
2
votes
1answer
32 views
What are the implications of two genes existing on the same chromosome as apposed to on seperate chromosomes?
What are the implications of two genes existing on the same chromosome as apposed to on seperate chromosomes?
2
votes
0answers
12 views
What is the relationship between the complexity of the genome and genetic variety?
Does the size of the genome (approximate number of millions of base pairs) or the number of genes (approximately) have a direct relationship to the genetic variety of two compared …
0
votes
1answer
37 views
Why is ‘A’ an unacceptable answer?
Why is 'A' an unacceptable answer?
2
votes
2answers
16 views
Where is DNA found in a prokaryote except for in the plasmid?
Where is DNA found in a prokaryote except for in the plasmid?
1
vote
1answer
12 views
Is the inability to mate sufficient evidence to call two groups different species?
The question:
Shrimps from one location are phenotypically similar. When scientists tried to mate them, they instead snapped angrily at each other. Why is the inability to mate …
1
vote
1answer
9 views
Does the term cloning only mean producing copies of organism that are genetically identical ARTIFICIALLY, or is just the afore mentioned definition but in all circumstances?
Does the term cloning only mean producing copies of organism that are genetically identical ARTIFICIALLY, or is just the afore mentioned definition but in all circumstances?
-1
votes
0answers
16 views
What can be expected in the offspring from this test cross?
The answer is:
spotted is recessive to clear.
Why?
1
vote
1answer
21 views
VCAA 2005 Genetics question needing clarification and understanding
How do I do these questions? Please explain fully, with all detail of you thoughts.
Also, how do we answer the question of "what genotype and phenotype ratios would you expect …
1
vote
1answer
16 views
When do the following key events in mitosis/meiosis occur?
When do each of translation, crossing over, deletion and inversion happen and in meiosis/mitosis?
1
vote
1answer
12 views
Would Sympatric Speciation in humans result in a diploid number of 46x2=92?
Would Sympatric Speciation in humans result in a diploid number of 46x2=92?
1
vote
1answer
11 views
Why is translocation caused down syndrome considered having a ‘trisomy’?
Why is translocation caused down syndrome considered having a 'trisomy' since the translocated chromosone 14 is just a Robertsonian translation isn't it? It's no more a 'trisomy' t …
1
vote
1answer
10 views
One section of a polypeptide has the amino acid sequence..The DNA coding region for it would be?
The answer is A.
How was this worked out?
