<span>the remains or impression of a prehistoric organism preserved in petrified form or as a mold or cast in rock.</span>
The first question is horses having long legs so they can run away from predators
The second question is Animals are less likely to eat this plant.
The third question is White skin is a favorable adaptation because it makes the lizards hard to see against the white sand.
The fourth question is Organisms produce fewer offspring if the environment does not have enough resources.
The fifth question is People kill rattlesnakes that rattle when approached by humans, but people do not kill rattlesnakes that remain silent. The quiet snakes survive and breed.
The sixth question is With the smallest population size
If this helps brainliest answer would be appreciated
Answer:
12:3:1
Explanation:
<em>The typical F2 ratio in cases of dominant epistasis is 12:3:1.</em>
<u>The epistasis is a form of gene interaction in which an allele in one locus interacts with and modifies the effects of alleles in another locus</u>. There are different types of epistasis depending on the type of alleles that are interacting. These include:
- Dominant/simple epistasis: Here, a dominant allele on one locus suppresses the expression of both alleles on another locus irrespective of whether they are dominant or recessive. Instead of the Mendelian dihybrid F2 ratio of 9:3:3:1, what is obtained is 12:3:1. Examples of this type of gene interaction are found in seed coat color in barley, skin color in mice, etc.
- Other types of epistasis include <em>recessive epistasis (9:3:4), dominant inhibitory epistasis (13:3), duplicate recessive epistasis (9:7), duplicate dominant epistasis (15:1), and polymeric gene interaction (9:6:1).</em>
In order to reproduce, female sex cells must be fertilized by A. Sperm.
