Answer:
The frequency of homozygous recessive offspring in a cross between two heterozygotes is 25%.
Explanation:
Since the alleles are of two types, that is dominant and recessive alleles. An heterozygous parent will have both alleles.
So, we can represent our dominant allele with G and the recessive allele with g.
Then, the two heterozygous parents will have Gg genes.
These alleles will be segregated into their singleness. the first parent will therefore have G and g and the second parent will also have G and g
Crossing these alleles using punnet's square, we the have the following genotypic ratio of the progenies: 1GG: 2Gg: 1gg
Therefore, the 1gg is the only heterozygous offspring out of the expected four offsprings. This made the frequency to be 1/4 X 100 = 25%.
<span>Their storm surges cause widespread flooding.</span>
It would comes up with a disorder ....
Answer:
- Crystallization (cooling or solidification)
- Erosion and sedimentation (lithification, burial and deposition)
- Metamorphism (Melting due to heat and pressure)
Explanation:
In rock cycle, there are three important processes that changes one type of rocks into another type. Those processes are:
- <u>Crystallization:</u> It is a process that takes place under the earth surface where magma cools down and is hardened to form igneous rocks. This process is also called freezing of rocks.
- <u>Erosion and sedimentation:</u> The rocks on the surface of earth are broken into smaller fragments called sediments that are formed by weathering of rocks. These sediments are then carried either by wind or water to different places and settles at some place to form another type of rock named sedimentary rocks.
- <u>Metamorphism:</u> Metamorphism takes place under the earth surface where extreme heat changes the mineral texture of the rock but does not melt it. such rocks are named as metamorphic rocks.