Genetics and Heredity

Which would be an example of gene therapy?

• Making fish glow under a UV light.

• Adding a gene to bone marrow to improve immune system function

• cross breeding two different species of orchids

• mating leaner pigs to produce lower fat content

A farmer has the juiciest tomatoes. Which is true about these tomoatoes?

• They are saltier, absorbing more water

• They are grown from seeds that produce bigger tomatoes

• They are grown from seeds that come from the juiciest plants

• They are watered more frequently during growth

What is true of all body cells except sex cells?

• Each cell contains a different number of chromosomes.

• The number of chromosomes in a cell are determined by the number of genes.

• Each cell has the same number of chromosomes, but each cell carry different DNA.

• Each cell contains the same number of chromosomes for that organism.

What is the relationship among chromosomes, genes, and DNA?

• Genes convert the DNA in the chromosomes to protein during synthesis

• Genes are made of tightly would strands of DNA. Chromosomes are made up of genes.

• Chromosomes are tightly wound strands of DNA. Genes are found only in the messenger RNA.

• Genes read the nucleotide sequences in the Chromosomes to prevent mutations

What determines the similarities in anatomical features among organisms?

• Genes and Chromosomes

• Weather and Climate

• Learned Behaviors

• Shared Habitat

Members of a certain species can reproduce with which of the following groups?

• Members of the same species

• Members of the same domain

• Members of the same Phylum

• Members of the same order

What did Mendel's cross-pollination of pea plants prove?

• It takes four generations of offspring to establish inherited traits.

• There is no such thing as a true-breeding plant.

• Each parent only passes on one-half of its hereditary factors to each offspring.

• Each offspring is identical to both parents.

If both parents are heterozygous (Tt) for height, what is the probability that the offspring will be short?

• 0%

• 100%

• 25%

• 50%

If one parent is Homozygous Dominant for brown eyes (BB) and the other parent is Homozygous recessive (bb), what are the chances that the offspring will have brown eyes?

• 50%

• 100%

• 75%

• 25%

Which part of the chromosome is responsible for determining traits?

• The centromere

• Ribosomes

• Chromatin

• Alleles