Mendel was able to study seven traits in all the pea plants in each generation. which of his hypotheses allowed him to analyze each trait separately?
a) if two different alleles for a gene occur together, one of the alleles may be expressed while the other is hidden.
b) when gametes are formed, each gamete carries only one allele for the gene.
c) there are alternate versions of a alleles called genes.
d) for each inherited trait, there is only one copy of the gene that codes for that trait.

The correct answer is D) For each inherited trait, there is only one copy of the gene that codes for that trait.

Genes are the segment of DNA that code for a specific trait or characteristic of the individual.

According to the law of Independent Assortment, genes responsible for different traits are separated independent of each other during the process of gamete formation.

Thus, out of the given hypothesis, the last one allowed Mendel to analyse each trait separately.

1) gene flow

- it is described as the transfer of genes from one population to another population so that frequency of gene is increased.

-a zebra migrates to join a different herd of zebras.

2) natural selection

- a mechanism of evolutionary change in which individuals with advantageous traits survive and reproduce whereas the others ( those that can not adapt) eliminate from the population.

-competition for sunlight leads to taller trees.

3) mutation

- permanent change in the nucleotide sequence of dna ( genetic material) that could have harmful or useful consequences.

-the dna of a snake changes to make its venom stronger.

4) genetic drift - it is a random phenomenon ( that occurs by chance such as fire) that results in change in the gene frequency in a small population.    

-a grassfire randomly sweeps through a population of buffalo and kills most of the animals.

explanation:

a researcher conducts an experiment on the secretion of a particular hormone in mice. scientists inject mice with a substance that stimulates the production of the hormone. the scientists then test the levels of hormones produced by the mice. the tool used to measure the hormones consistently detects the levels at 10 points lower than the actual hormone levels in the mice. this tool makes measurements, but the measurements aren't .

explanation:

no u