The phenotype ratio would be 25% each for widow's peak and freckles, widow's peak without freckles, straight hairline with freckles, and straight hairline without freckles.
<h3>Dihybrid crossing</h3>
Genotype of the heterozygous parent: HhFf
Genotype of the other parent = hhff
Crossing the two parents:
HhFf = 1/4 = Widow's peak, freckles
Hhff = 1/4 = Widow's peak, no freckles
hhFf = 1/4 = straight hairline, freckles
hhff = 1/4 = straight hairline, no freckles.
More on dihybrid crossing can be found here:brainly.com/question/1185199
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An annular solar eclipse happens when the Moon covers the Sun's center, leaving the Sun's visible outer edges to form a “ring of fire” or annulus around the Moon. The ring of fire marks the maximum stage of an annular solar eclipse<span>.
</span><span>https://www.timeanddate.com/eclipse/annular-solar-eclipse.html
</span>
Answer:
B
Explanation:
They can no longer return to their natural habitat and that leads to changes in all aspects, rendering all other answers insufficient.
Answer:
This is because the X chromosome is large and contains many more genes than the smaller Y chromosome. In a sex-linked disease, it is usually males who are affected because they have a single copy of X chromosome that carries the mutation
Explanation:
Macrophages are a type of the White Blood Cells that is a part of the immune system of the body. Macrophages are the first line of defence. They engulf the foreign bodies, foreign particles, cancerous cells and infected cells. They do it by searching for a protein marker on the surface of these foreign bodies. When the marker is absent they attack these bodies by performing phagocytosis.
Langerhans cells present on the skin are specialised macrophages that form the first line of defence.