Across
- a condition in which blood lacks essential proteins for clotting. It is caused by a defective allele for a gene
- any substance which can cause a mutation is called a __
- a person with three #21 chromosomes is said to have ___21
- different forms of a particular gene which produce different traits
- the outward appearanceof a trait displayed by an individual
- Fertilizing plants or animals in a systematic way in order to produce offspring with desired characteristics is called selective ___
- ___radiation will cause a mutation by removing electrons from the atoms in a chromosome and causing a defective gene
- a mutation which results in an disadvantage for a population is called a __ mutation
- shows the alleles for a certain trait actually possessed by an individual
- a name for individuals resulting from breeding
- a mutation which results in an advantage for a population is called a __ mutation
- A blood type in which red blood cells contain two different types of antigens
- a person with type AB blood is said to be a universal ___
- a person with type "O" blood is said to be a universal __
- a mutation which results in neither an advantage nor a disadvantage for a population is called a __ mutation
- ___light is a mutagen
- a genotype in which the alleles are different (eg. Hh)
- a positive mutation in a bacteria population can result in ___ to an antibiotic
|
|
Down
- When there are more than 2 alleles for a certain gene, the gene is said to have ____ alleles
- an individual who is heterozygous and results from a cross of two purebreds (eg. HH x hh) --> Hh is said to be a __
- an allele that will not show its trait if the dominant allele is present is said to be ___
- an individual who possesses three #21 chromosomes instead of the normal two is said to have Down's ____
- a gene which has an allele on the X chromosome but no corresponding allele on the Y chromsomes is said to be __-linked
- a trait that is shown in an individual's phenotype is said to be ___ rather than hidden
- a substance in the blood plasma which attacks a molecule with a certain antigen
- a type of inheritance in which a heterozygous offspring displays a blend of traits from the parents is called ___dominance
- a protein on the surface of a molecule which causes it to be attacked by an antibody
- a negative mutation which happens when an embryo is developing can result in a birth ____
- an individual who is homogygous for a certain gene and who came from a population in which all the members have the same genotype is called a __
- a genotype in which both of the alleles are identical (eg. HH or hh)
- a recessive allele is not displayed but is __ if the dominant allele is present
- a type of inheritance in which a heterozygous offspring displays both traits from the parents almost equally is called ____
- a female who possesses the allele for hemophilia but does not have hemophilia is said to be a __
- an allele that will show it's trait even if the other allele is present is said to be ____
- pairs of chromosomes in which each chromosome contains an allele for a certain gene are called ___ chromosomes
|