Unit 8

________ are a pair of genes which are located at the same place on homologous chromosomes. Gametes Alleles Punnetts Offspring

The specific region of a chromosome which can determine the development of a specific trait. phenotype gene allele DNA

In mammals the females are represented by having two X chromosomes (XX) and the males by having an X and Y chromosome (XY). Based on a Punnett Square, what percentage will be males and what percentage will be females? 25% male, 75% female 50% male, 50% female 75% male, 25% female 100% female

In order to set up a Punnett Square, what will be the genetic makeup of the gametes produced by a bull that is homozygous for black (BB) coat color and heterozygous for the polled (Pp) condition? bP, BP, bp, Bp BB, Pp, BB, Pp bP, bp BP, Bp

Assuming that the gene controlling black fur color in rabbits is recessive (w) and white fur color is dominant (W), what percentage of the offspring will be phenotypically white when a homozygous, black male (ww) is mated to a heterozygous white female (Ww)? 50% white, 50% black 100% black 25% black, 75% white 100% white

_______ are a pair of genes which are located at the same place on homologous chromosomes. gametes alleles

True or False? Genotype is the genetic constitution (makeup) of an individual.

When plants with red flowers are crossed with plants with white flowers the seeds from this cross produce plants with pink flowers. This is an example of _________ pair alleles incomplete dominance recessive inheritance sex-linked

True or False? A specific region of a chromosome capable of determining the development of a specific trait is recessive.

True or False? Economically, important traits in livestock are controlled by one or two alleles.

An animal that carries a gene with two different alleles is said to be ____________. heterozygous homozygous dihybrid bipolar

True or False? A Punnett Square is a diagram used to predict an outcome of a particular cross or breeding experiment.

Wet ear wax is an example of a _______ gene because it causes traits in multiple areas of the body. Polygenic Singlegenic Pleiotropic

______ means two different versions of a gene were given. For example. Ww. Heterozygous Twozygous Polyzygous Homozygous

Diploid means ____ sets of chromosomes. 1 2 4 3

What Austrian Monk first started truly understanding heredity? Aristotle Gregor Mendel Julius C Walt Whitman

A _____ is a section of DNA on a chromosome. RNA Gene Cell Chromosome

When a trait is determined by a SINGLE gene, it is called a _______ Polygenic Trait Pleiotropic Singlegenic Trait Mendelian Trait