Biology Test

What does it mean when a trait is dominant?

One allele for a particular trait is always expressed over a different allele.
What are gametes?

Male and Female Sex Cells
What is incomplete dominance?

When two alleles for a gene are blended and the result is not like the dominant nor recessive trait.
What is codominance?

When both alleles contribute to the phenotype of the organism.
What are multiple alleles?

Genes that have more than two alleles.
What's a polygenic trait?

A trait that has two or more genes that control it.
What are homologous chromosomes?

Similar sets of chromosomes in an organism's cells.
What happens during the "crossing over" part of meiosis?

Two homologous chromosomes exchange part of their cytoplasm.
How many cells are present after a single cell divides in meiosis?

4.
What do you call a cell that has half the number of chromosomes as the parents?

A haploid cell.

Author

Anonymous

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Card Set

Biology Test

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for my bio test

Updated

2011-12-07T23:05:58Z

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