<em><u>Tay -sachs disease:
</u>it is a genetic disease due to autosomal disorder ..it causes nervous disability .. incubation period is from six months of age till the death and death occurs in 4 years of age..
<u>it is just prominent in the jews of Eastern ancestry ,, but form the options it is D )Jewish Americans ..</u></em>
Answer:
The answer is the crossing over between chromossomes is reciprocal.
Explanation:
Crossing over between chromossomes is reciprocal, so whenever a recombinant chromosome of one type is produced, there is a recombinant of the opposite type that is also produced.
Answer:
b. orientation dependent
e. located upstream of the gene it controls
Explanation:
Promoter sequences:
These are the sequences present within the DNA on which RNA polymerase binds and start transcription of a gene. These sequences are present directly upstream of transcription initiation site at the 5' end.
Prokaryotes and Eukaryotes both have specific promoter location site which is fixed. So first (a) and Last (f) options of this question are wrong.
This sequence have specific orientation Like TATA box so these are orientation dependent.
These sequences are present directly upstream of transcription initiation site at the 5' end.
It has a smaller impact on the environment
Answer:
Averaging the fitness of its members.
Explanation:
The fitness of a whole population can also be determined by averaging the fitness of its members. Absolute fitness is the ratio between the number of individuals with a genotype before selection versus after selection. Fitness is usually discussed in terms of genotypes, or collection of genes.
