Genetics

a form of a gene apex

The mitotic spindle forms. Apex

The purpose of the Punnett square is to predict a breeding experiment outcome. Genetic mutation can cause the Punnett square to return inaccurate results.

Tt

a homozygous trait is when an offspring has either both dominant genes or both recessive genes from its parents. a heterozygous trait is when an offspring has both dominant and recessive genes. for example: a long-tailed cat is dominant and a short-tailed cat is recessive. the long-tailed cat (homozygous dominant) had offsprings with the short-tailed cat (homozygous recessive). by doing the punnett square, 100% of their offspring will be heterozygous.

The thing that must be true for a cross between a tall plant and a short plant to produces any short plants would be that the tall plant would have to be heterozygous. This would mean that fifty percent of the plants would be short.

Color blindness is a recessive sex linked trait.

A Punnett Square is a diagram used by biologists and geneticists to analyze crossbreeding, i.e. to determine the probability of the possible types of offspring which would result from crossing parents of similar or different genotypes and phenotypes. It is used to show every type of combination possible when one or more maternal and paternal alleles interact, for each gene being studied in the cross.

Though not always accurate, this diagram also generally teaches students that are studying genetics how receiving one allele from two different parents does not always have a straightforward outcome. It shows students that there are a large number of possibilities when paternal and maternal alleles interact, especially when one or more parent has an unknown allele.

A polygenic inheritance pattern.

Cause attached earlobes are the dominant trait. Unattached earlobes are reccessive.

Crossing Yy x Yy yields YY, 2Yy, yy. Since Y is dominant over y, then YY and 2 Yy all result in the same phenotype. Therefore 3/4 of the offspring will resemble their parents.

The more samples you use, the closer your results will match probability.

To validate the results of his experiment.

The allele for green seeds is recessive; when a yellow-seeded plant and a green-seeded plant were crossed in the parent generation, the genotype of all of the offspring was Yy, so they exhibited yellow seeds, the dominant allele. However, when two plants from the F1 generation (both with a genotype of Yy) were crossed, 25% of the offspring had a genotype of YY, and displayed yellow seeds; 50% of the offspring had a genotype of Yy, and displayed yellow seeds; but 25% of the offspring had a genotype of yy, and displayed green seeds.

Males and females have different sex chromosomes.

The factors for each trait are separated independently when sex cells form.

50%

Gk, gk

the likelihood that something will happen

(Apex Learning) He showed how traits are passed between generations.

Probability is a numeric expression of the "odds" that something will happen.