Answer:
Habitat is a place in which organisms live, and niche is the way in which an organism fits into its habitat
Answer:
1. heterozygous yellow and star
2. 37
3. 1/8
4. 168
5. 1/4
Explanation:
Given ,
In f1 generation a cross is made between a true breeding black star bellied sneetch mated with a true breeding yellow starless sneetch
yySS x YYss
It is taken as - Y (yellow) is dominant over y (black)
and S (star) is dominant over s (starless)
1. F1 Generation
Genotype of parents yySS X YYss
gametes - yS, yS, Ys, Ys
All 16 offspring will have genotype YySs
phenotype would be heterozygous yellow and star
2. F2 generation cross
YySs X YySs
YS Ys yS ys
YS YYSS YYSs YySS YySy
Ys YYSs YYss YySs Yyss
yS YySS YySs yySS yySs
ys YySs Yyss yySs yyss
Genotype of offspring are –
YYSS – 1
YYSs – 2
YySS – 2
YySs – 4
YYss- 1
Yyss- 2
yySS – 1
yySs- 1
yyss- 1
2. Out of 16, 2 are black star bellied sneetches . Which means only 1/8 are black star bellied sneetches
So out of 300, 37 are black star bellied sneetches
3. Only 2 out of 16 are true breeding. i.e 1/8
4. 9 out of 16 are yellow star bellied sneetches, so out of 300, 168 are yellow star bellied sneetches
5. 4 out of 16 are true breeding yellow. Thus, ¼ are true breeding
Answer:
<h2>
5' UTR E1 E2 E3 E4 UTR 3'</h2>
Explanation:
During RNA splicing, introns are removed and exons are joined tp each other to form a mature mRNA and this RNA moves to cytosol.. So 5' UTR , UTR 3' and all exons are joined together.
All introns are removed and exons are joind during RNA splicing process.
So the final mRNA is 5' UTR E1 E2 E3 E4 UTR 3'.
Answer:
The correct answers are:
Analogous structures do not indicate a common ancestor. Analogous structures have the same function but a different structure. An example of an analogous structure is the wing of a bat and a butterfly.
Explanation:
Analogous structures are the structures that have a similar function in various organisms but their anatomic structure is different from one another in reality. Analogous structures are do not indicate a common ancestor.
An analogous structures example is the wings of the bat and butterfly as they are both used for flying but their structure is different anatomically from one another.
Answer:
The population of sage-grouse decreases with the passage of time because of humans.
Explanation:
In the past, long time ago the population of sage-grouse bird were in millions in the Western United States of America and Canada but gradually decrease occurs in population with the passage of time due to the change which occurs in the environment by humans. Destroying the natural habitat for making buildings and for energy development decrease the population of sage-grouse from 16 million to 500,000 during 100 years.
