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Genetics & Heredity

Unit 5: Genetics & Heredity

What is true about two parents who show a recessive trait? all of their offspring will show a recessive trait
What is the process that is commonly used to assure desirable characteristics, or traits, in the offspring of animals? selective breeding
Within a species, a number of characteristics remain the same from one generation to the next. What would explain this? Characteristics are genetic
Two blue flowers were crossed, and the resulting offspring were 75 % blue and 25% green. Which term describes the green flower color? recessive
When Gregor Mendel crossed pea plants that produced yellow seeds with pea plants that produced green seeds, he observed plants that produced only yellow seeds among the offspring . Which term describes the trait for producing yellow seeds? completely dominant
A woman with brown hair and a man with brown hair have a baby with blonde hair. The allele for having blond hair must be.... recessive
When alleles are the same, the are ______________. homozygous
When alleles are different, the are _______________. heterozygous
The passing of traits from parent to offspring is called ____________. heredity
Characteristics such as eye color, that are passed from one generation to the next, are known as ______. traits
This kind of allele is always represented by a capital letter. Dominant
This situation is when one trait is not completely dominant over the other. It is a blending of the traits. Incomplete Dominance
When a bacterial cell splits to form tow new bacterial cells, is this sexual or asexual reproduction? asexual
How many parent cells are involved when an organism reproduces asexually? 1
How many parent cells are involved when an organism reproduces sexually? 2
The purpose of meiosis is to make these. Sex Cells, Gametes, Reproductive Cells, Haploid Cells
The purpose of Mitosis is to produce these. Body Cells, Somatic Cells, Diploid Cells
Which type of reproduction involves 2 parents and the offspring are not genetically identical? Sexual Reproduction or Fertilization
List some examples of asexual reproduction. regeneration, binary fission, budding
How many new cells form from mitosis? 2
How many new cells are formed from meiosis? 4
Individuals in a population that have traits or abilities that give them a competitive advantage over other population members are more likely to survive and reproduce. What principle is this? Natural Selection
What process creates cells with half of the DNA? Meiosis
What process makes new identical cells? Mitosis
What process is used to assure desirable traits in offspring? Selective Breeding
If a sexually reproducing organism has 14 chromosomes in its DNA, how many did it get from each parent? 7
Genetic mutations can be..... harmful, beneficial, or neither (neutral)