b. Genotype YyRr, if dominant Y and R are on the same chromosome, no crossing over
c. Genotype YyRr, if dominant Y and recessive r are on the same chromosome, no crossing over
d. Genotype YyRr, if dominant Y and R are on the same chromosome, 50% crossing over
Answer:
The correct answer would be -
1- YR, Yr, yR and yr.
2. Yr, yR
3. YR, yr
4. YR, Yr, yR & yr
Explanation:
A mature male or female haploid germ cell that fuses with another gamete of the opposite sex during the process of fertilization to make a zygote in sexual reproduction.
The law of Independent Assortment presented by Mendel says that alleles for different traits are passed and assort independently of one another in the gametes.
1. If Y and R on different chromosomes then they will produce four gametes and assort independently - YR, Yr, yR & yr.
2) If Y and R on the same chromosomes and no crossing over occurs then they will produce only two gametes as Y and R will not come together - Yr & yR.
3). if dominant Y and recessive r are on the same chromosome, no crossing over then only two gametes will form as Y and r will not assort together - YR & yr.
4). if dominant Y and R are on the same chromosome, 50% crossing over produces 4 types of gametes, YR, Yr, yR & yr.
Answer:
DNA: TTAAGCCCCAAA
RNA: UUAAGCCCCAAA
Explanation:
A binds with T (Apples on Trees)
C binds with G (Cows eat Grass)
So complementary sequence would be TTAAGCCCCAAA
For RNA sequence:
For RNA:
A binds with U
T binds with A
C binds with G
So RNA complementary will be UUAAGCCCCAAA
-Gaseous planets slowly changed to rocky planets after colliding with meteorites.
-Water and ammonia condensed from gases to ice particles.
-Very large asteroids broke apart to form rocky planets, including Earth.
-The accretion of cosmic dust formed the seeds of planets, including Earth
The statements 'the accretion of cosmic dust formed the seeds of planets' and 'the denser rocky material in the solar nebula stayed closer to the sun' help explain how Earth formed. It is part of the solar system.
The solar system consists of the Sun and eight planets (i.e., Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune).
The solar system is also composed of Pluto (a dwarf planet) many different moons, asteroids, etc.
The solar system formed approximately 4.6 billion years ago from interstellar gas and dust.
Learn more about the solar system here:
Answer:
The accretion of cosmic dust formed the seeds of planets'
The denser rocky material in the solar nebula stayed closer to the sun
Explanation:
I took the Exam :)
Answer:
An Experiment to get proof that the two genes are equivalent functionally will be to introduce the aneroid mutation from the human eye with the condition into the embryos of Drosophila (small fruit flies) and look out for the formation of iris.
Explanation:
There exists a medical test called The Invitae Aniridia Test which can analyze the primary gene associated with aniridia however, in order to provide evidence that these same gene is also present in small fruit flies (a genus of flies called Drosophila) The method described in the answer above will do.
Answer:
metamorphic
Explanation:
This is an example of competitive exclusion. Over many generations, Gentoo penguins in another area adapt to feed on krill at greater depths than the Chinstrap penguins. This is an example of adaptive radiation.
Competitive exclusion is a principle in ecology that states that two species that occupy the same niche cannot coexist indefinitely. If one species is better adapted to the environment and has a competitive advantage over the other, it will outcompete the other species and drive it to extinction. This is what appears to have happened in the case of the Chinstrap and Gentoo penguins. These two species occupy the same area and have the same food source, which means that they are competing for the same resources. Over many generations, the Chinstrap penguins, which are better adapted to the environment, were able to outcompete the Gentoo penguins and drive them to local extinction. Adaptive radiation, on the other hand, is the evolution of a single species into multiple species that each occupy a different niche. In the case of the Gentoo penguins, it appears that they were able to adapt to feeding on krill at greater depths than the Chinstrap penguins. This allowed them to occupy a different niche and coexist with the Chinstrap penguins without competing for the same resources. Adaptive radiation can occur when a species colonizes a new area with a variety of available niches or when a species evolves to exploit a new resource. In both cases, the species is able to diversify and occupy a variety of niches, allowing it to coexist with other species that occupy different niches.
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