A woman who is a carrier (heterozygous) for Huntington’s Disease, which is a dominant disease, marries a man who is also a carrier for the disease. What are the genotypes? What is the probability that their children will have the disease? What is the probability that their children will not have the disease? Show a Punnett square!

If H represents the trait for Huntington disease and is dominant trait, and h represents a normal trait.

The woman and the man are carriers, therefore their genotype is Hh.

The probability that their children will have the disease is 3/4.

The probability that their children will not have the disease is 1/4.

Explanation: The trait for Huntington disease (H) is dominant over the normal gene (h). A cross between two carriers (heterozygous) adults will yield one who is child homozygous for Huntington disease (HH), two children who are heterozygous for Huntington disease (Hh) and one child homozygous for normal allele (hh).

The two children heterozygous for Huntington (Hh) will appear outwardly as Huntington disease because the trait for Huntington is a dominant gene. In total three of the children will have Huntington disease while one will not have Huntington disease.

See the attached punnet square for illustration

fertilization, pictured in figure 24.23a is the process in which gametes (an egg and sperm) fuse to form a zygote. the egg and sperm each contain one set of chromosomes. to ensure that the offspring has only one complete diploid set of chromosomes, only one sperm must fuse with one egg. in mammals, the egg is protected by a layer of extracellular matrix consisting mainly of glycoproteins called the zona pellucida. when a sperm binds to the zona pellucida, a series of biochemical events, called the acrosomal reactions, take place. in placental mammals, the acrosome contains digestive enzymes that initiate the degradation of the glycoprotein matrix protecting the egg and allowing the sperm plasma membrane to fuse with the egg plasma membrane, as illustrated in figure 24.23b. the fusion of these two membranes creates an opening through which the sperm nucleus is transferred into the ovum. the nuclear membranes of the egg and sperm break down and the two haploid genomes condense to form a diploid genome.

explanation:

yes!

explanation:

because it has a type of fat that can make you extremely sick