Question

What are alleles?

1. Genes for different traits, such as hair color and eye color
2. Alternative forms of a gene for a single trait, such as blue eyes or brown eyes
3. The locations of genes on a chromosome
4. Recessive forms of a kind of characteristic carried by genes
5. Dominant forms of a kind of characteristic carried by genes

In order to have the additional information provided by the location of the centromere in chromosomes, the process of karyotyping uses a chemical that arrests dividing cells at the stage of

1. Egg fertilization
2. Prophase
3. Metaphase
4. Anaphase
5. Non-disjunction

If an organism shows a recessive phenotype, such as short pea plants, it can be

1. Either TT or Tt
2. Either Tt or tt
3. Only TT
4. Only tt
5. TT, Tt, or tt

Answer 1

1.B)alternative forms of gene for a single trait, such as blue eyes or brown eyes.

Because alleles are the one which are responsible for alterations or variations in the gene which are the reason for the trait because allele vary in their sequence.

2.metaphase

Chemical called colchicine arrest the process in metaphase.

3D.only tt

As T is dominant Tt represent heterozygous tall and not short. Short is represented only if both are tt.