Answer;
A. In anaphase I, homologous pairs are separated but sister chromatids stay joined together.
Explanation;
-Anaphase of mitosis is stage during during which each chromosome's sister chromatids separate and move to opposite poles of the cell. The stage before anaphase, metaphase, the chromosomes are pulled to the metaphase plate, in the middle of the cell.
-Anaphase I begins when the two chromosomes of each bivalent (tetrad) separate and start moving toward opposite poles of the cell as a result of the action of the spindle. The sister chromatids remain attached at their centromeres and move together toward the poles.
<h2>Tetrapods</h2>
Explanation:
d. All of the above
Tetrapods include animals who have four limbs.
Tetrapods are thought to evolve from aquatic ancestors, and primarily inhabited shallower waters before they completely migrated to land. This transition has fascinated the scientists and created a wild field for evolutionary studies.
Phylogenetic analysis prove that, tetrapods are advance and more complex than non-tetrapods, they are more evolved than non-tetrapods and are closely related to each other.
The answer is Experiments provide fresh evidence for new interpretations. It is important to point out that scientific method was invented to provide a tool to evaluate claims like the one above. Hypothesis are not strictly scientific and they need to be subject to the rigours of such things as objective observation, error analysis, statistical analysis, and repeatability before they can be claimed as scientific fact, and generally need to be able t correctly predict future outcomes. Hypothesis and theoretical science do not provide an actual answer but give a basis of evaluation.
If two heterozygous individuals are crossed, the results of the cross are as follows:
- SS - spotted condition
- 2 Ss - Spotted condition
- ss - non-spotted condition
<h3>What is an Heterozygous Cross:</h3>
According to this question, the gene coding for spotted condition. The allele for spotted condition (S) is dominant over the non-spotted condition (s).
If two heterozygous Dalmatian dogs are crossed i.e. Ss × Ss, the allele combination for each gamete is as follows:
The following offsprings will be produced:
- SS - spotted condition
- 2 Ss - Spotted condition
- ss - non-spotted condition
Learn more about heterozygous cross at: brainly.com/question/13050360