Answer:
Considering that white eyes are a recessive trait in flies, it is possible for two red-eyed flies to have offspring with white eyes only if both are heterozygous for this trait.
Explanation:
For two individuals with dominant phenotype for a trait to have offspring with the recessive trait, both must have a heterozygous genotype.
In the case of the characteristic eye color of the flies
:
- <em>Red eye (R) is dominant trait.
</em>
- <em>White eyes (r) is the recessive trait.
</em>
When both parents are heterozygous, their genotype is Rr
In Punnett Square it can see the result of the crossing of these individuals:
Punnett Square
:
<em><u>Rr X Rr
</u></em>
<em>Alleles R r
</em>
<em>R RR Rr</em>
<em>r Rr rr</em>
In the offspring, the probabilities are:
- 50% heterozygous individuals Rr, with red eye phenotype.
- 25% pure dominant individuals RR, with red eyes
- 25% individuals with the recessive rr genotype, white eyes.
<u>This is the possibility of two red-eyed flies having white-eyed offspring</u>.
Answer:
Explanation:
5 Reasons the World is Running Out of Freshwater
Increased Food Requirements of a Growing Population. ...
Increased Energy Requirements by a Growing Population. ...
Increased Frequency of Droughts. ...
Groundwater is Being Pumped at Unsustainable Rates. ...
Inadequate Water Infrastructure.
Answer:
- CMB radiation and a very early form of helium were discovered
- Redshift of distant stars and galaxies indicate the universe continues to expand.
Explanation:
After the big bang, the remnants of the explosion are perceived mainly in the microwave spectrum ( after photon decoupling phase) that continues to fade as it diffuses across the expanding universe. As the universe expands, it causes the wavelengths of the photons to increase (relative to the observer who will view the galaxies moving away from him in red-shift).
Answer: More than 90% of measles infections occurs in children under 15 years old.
Hope this helps
Hox gene are basically the controlling gene which controls the timing and growth of embryonic development with presence in every animal kingdom species.
Explanation:
The presence of Hox gene in every animal kingdom species is self explanatory to have a common link between them all, even including the humans.
The role of Hox gene is a controlling gene. It controls the time of embryonic development that is, when to start dividing and which way of division should carry on for how long. This let the deciding factor for the growth of the embryo, and comes the variation, and hence, evolutionary pattern can be sketch out. This is why the scientists feel its evidentiary value in all organisms sharing common ancestor.