Answer:
A testable hypothesis is valuable, even if evidence shows that it is false
Explanation:
A hypothesis sets a base on which the experiment is conducted by determining the design and protocol for which the scientists will take in the experiment. A hypothesis, therefore, should be developed based on good research prior to beginning to conduct the experiment. Usually a good hypothesis is one of no change called a 'null hypothesis'. Based on an analysis of data from the experiment, a hypothesis could either be rejected or accepted. If the null hypothesis is rejected then the alternative - which is usually the flip side of the null hypothesis- is adopted as true.
Yes, rocks are valuable because they are part of earths crust
Answer:
Explanation: the image on the left is 4up and the image on the right is 2 right
Answer: For three traits inherited in a dominant/recessive pattern, the probability of an offspring in a trihybrid cross between parents heterozygous for all three traits to be recessive at exactly two of the three loci is 23/64.
Explanation: Let A, B and C represent the dominant alleles and a, b and c represent the recessive alleles. The genotype of each of the parent will be AaBbCc since it has been said to be heterozygous for all the three traits. There are eight (8) possible different types of gametes from each of the genotype. This can be calculated using 2^n where n is the number of heterozygous loci.
The number of heterozygous loci in the genotype AaBbCc is three (3). 2^3 = 8. The gametes are;
ABC
ABc
AbC
Abc
aBC
aBc
abC and
abc.
Therefore, sixty-four possible offsprings are expected from the cross AaBbCc x AaBbCc.
Out of these offsprings, twenty-three (23) are expected to be heterozygous at two loci as boldly shown in the attached image.