BIOL1003 Lecture Notes - Lecture 12: Beta Thalassemia, Gregor Mendel, Blending Inheritance

If an organism’s diploid chromosome number is 18, how many different possible combinations of homologous chromosomes lining up during meiosis exist for the eggs or sperm produced by that organism?

At the end of metaphase I, _______________ separate.

Mendel observed that dominant traits

Cytokinesis in plant cells differs from cytokinesis in animal cells because

Sickle cell anemia is an example of what type of inheritance?

Which of the following statements is true:

Skin cancers typically develop in the

Duchenne muscular dystrophy (MD) is inherited from an X-linked recessive allele. What is the probability that a son with Duchenne MD inherited this disease from his biological father?

The genetic makeup of a particular trait in an individual is its

What structure holds the sister chromatids to the spindle fibers?

If you view a cell in which the genetic material is beginning to be visible as separate bodies, and the nucleus has disappeared from view, you may surmise that the cells is in

Gregor Mendel was successful in his analysis of the genetics of pea plants because

Tall corn plants (T) are dominant to dwarf plants (tt). Solid green leaves (G) are dominant to leaves with a white tip (gg). A cross between two corn plants yielded the following phenotypes: 51 tall plants with a white tip on their leaves; 43 dwarf plants with solid leaves; 48 dwarf plants with white tips on their leaves; 45 tall plants with solid leaves. What are the genotypes of the parents that produced these plants?

In humans, a gene that has been identified as causing a type of skin cancer is the

The segregation principle states that in sexually reproducing diploid organisms the two copies of each gene

In what phases is the genetic material in the cell correctly referred to as chromatids?

Consider two traits for an organism, determined by two genes, each of which is governed by at least two alleles. In the case of a dihybrid individual, the gametes formed will be of either the parental type or the recombinant type. Recombinant type gametes are formed because of

An allele is

After the DNA is replicated, and it condenses in prophase, two identical rods of DNA are seen. These are

Special cells found in the gonads that give rise to gametes upon division are called

Q:

If an organism’s diploid chromosome number is 18, how many different possible combinations of homologous chromosomes lining up during meiosis exist for the eggs or sperm produced by that organism?

At the end of metaphase I, _______________ separate.

Mendel observed that dominant traits

Cytokinesis in plant cells differs from cytokinesis in animal cells because

Sickle cell anemia is an example of what type of inheritance?

Which of the following statements is true:

Skin cancers typically develop in the

Duchenne muscular dystrophy (MD) is inherited from an X-linked recessive allele. What is the probability that a son with Duchenne MD inherited this disease from his biological father?

The genetic makeup of a particular trait in an individual is its

What structure holds the sister chromatids to the spindle fibers?

If you view a cell in which the genetic material is beginning to be visible as separate bodies, and the nucleus has disappeared from view, you may surmise that the cells is in

Gregor Mendel was successful in his analysis of the genetics of pea plants because

Tall corn plants (T) are dominant to dwarf plants (tt). Solid green leaves (G) are dominant to leaves with a white tip (gg). A cross between two corn plants yielded the following phenotypes: 51 tall plants with a white tip on their leaves; 43 dwarf plants with solid leaves; 48 dwarf plants with white tips on their leaves; 45 tall plants with solid leaves. What are the genotypes of the parents that produced these plants?

In humans, a gene that has been identified as causing a type of skin cancer is the

The segregation principle states that in sexually reproducing diploid organisms the two copies of each gene

In what phases is the genetic material in the cell correctly referred to as chromatids?

Consider two traits for an organism, determined by two genes, each of which is governed by at least two alleles. In the case of a dihybrid individual, the gametes formed will be of either the parental type or the recombinant type. Recombinant type gametes are formed because of

An allele is

After the DNA is replicated, and it condenses in prophase, two identical rods of DNA are seen. These are

Special cells found in the gonads that give rise to gametes upon division are called

1. Characters that show a continuous range of variation, such as height and eye color, usually are controlled:

2. In humans, red-green colorblindness is inherited as a sex-linked recessive trait. In order for a woman to be red-green colorblind, which of the following statements must be true.

3. The x-ray crystallography data collected by Rosalind Franklin suggested to Watson and Crick that the:

4. In the genetic code, _________ one amino acid.

5. During Meiosis I, a homologous pair of chromosomes may not separate, resulting in daughter cells that have extra chromosomes or are missing chromosomes. This can lead to genetic disorders, including Down Syndrome. This phenomenon is called:

6. You are a human geneticist studying the incidence of retinitis pigmentosa in the residents of Tristan de Cunha, a group of small islands in the middle of the southern Atlantic Ocean. The allele for retinitis pigmentosa, which causes a form of blindness, is inherited as an autosomal recessive. You have determined that the frequency of this allele (r) in the population is 0.4 (40%). Using the principles of the Hardy-Weinberg rule, you would estimate the frequency of individuals who are heterozygous for this allele (Rr) in the population to be:

7. Natural selection acts at the level of the:

8. You are working with pea plants, trying to recreate the experiments that Mendel performed. You are doing a dihybrid cross with a plant that is heterozygous for both seed shape and seed color, with the genotype RrYy. Which allelic combinations would you expect to find in the gametes produced by this plant?

9. Biochemist Erwin Chargaff found that in DNA there is a special relationship between the four bases that we now call Chargaff's rule. His observation was that, in an organism's genome the:

10. During DNA replication:

11. During translation, amino acids are joined by peptide bonds to make polypeptides. The formation of these peptide bonds is catalyzed by:

12. If an allele (R) at a gene with two alleles shows complete dominance, individuals with the genotypes ______ will have the same phenotype.