Answer:
The correct option is Number 1. AaBb x AaBb
Explanation:
Genes can be described as basic hereditary units. The genes are made up of DNA.
A gene carries two alleles for a particular trait. These alleles are present at the same loci in the homologous chromosomes. If the two alleles are similar then they are termed as homozygous e.g AA, BB. If the alleles for a trait are different then they are termed as heterozygous e.g Aa and Bb.
Answer:
Place a filter funnel on the top of a conical flask.
Roll the filter paper into a cone and place it on the flask.
Pour the mixture of sand and water into the conical flask with the filter funnel and paper.
Wait till all the sand is left over in the filter paper and all the water has been separated.
(You could also heat the sand in a warm oven to remove any water remaining)
Hemophilia is considered a sex-linked recessive disorder which means the disease does not occur if only one gene in a pair is abnormal.
Inheritance pattern of the offspring of a father who has hemophilia and a mother who does not have hemophilia and is not a carrier:
- all sons will be born normal
- all daughters will be carriers
Inheritance pattern of the offspring of a father who has hemophilia and a mother who is a carrier:
- 25% chance of having a hemophiliac son
- 25% chance of having a son with no hemophilia
- 25% chance of having a daughter who is a carrier
- 25% chance of having a hemophiliac daughter
Answer:
Answer: The Blue eye trait skipped a generation and so the girl got the trait with the two alleles (bb: for example)
Explanation:
The correct answer is adherens junctions.
Adherens junctions or zonula adherens are the cell–cell junctions in epithelial tissues. This type of junction is formed when cytoplasmic face is linked to the actin cytoskeleton and the proteins included in adherens junctions are cadherins and catenins. Adherens junctions can be:
• zonula adherens - appear as bands that encircle the cell or
• adhesion plaques – appear as spots of attachment to the extracellular matrix.
