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Olegator [25]
3 years ago
14

Which of the following would not support Darwin's research leading to the theory of natural selection? vestigial structures are

found in fossils of ancient ancestors and current related populations certain traits allowing individuals to survive are passed to offspring certain mutations that weaken individuals in a population eventually die out in future generations colored feathers that camouflage birds from predators are found in the majority of the current bird population
Biology
2 answers:
Molodets [167]3 years ago
6 0
The answer is a, "<span>vestigial structures are found in fossils..."  because the rest all support Darwin's theory! Hope this helps! </span>
irga5000 [103]3 years ago
4 0
I believe the answer would be A. :)

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Which two statements about forces are true?
Hatshy [7]

Answer:

I believe it is A & C

Explanation:

8 0
3 years ago
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Which best defines the population growth rate?
Aleks [24]

Answer:

A a(birth rate+immigration)-(death rate)

7 0
3 years ago
Gray seed color in peas is dominant to white. Assume that Mendel conducted a series of experiments where plants with gray seeds
bazaltina [42]

Answer:

(a) Gg × Gg; (b) genotypic = 1:2:1, phenotypic = 3:1

Explanation:

a) A cross between two gray seeded plants produces progeny with gray and white seeds in 3:1 ratio (302:98=3:1). This means that the parent plants are heterozygous and each has at least one recessive allele. If the allele "G" is responsible for gray seed and the allele "g" imparts white color to the seeds, the genotype of the heterozygous parents would be "Gg".  

b) A cross between two heterozygous gray seeded parents would produce progeny in following ratio:

Genotype ratio= 1 GG: 2 Gg: 1 gg

Phenotype ratio= 3 Gray: 1 white

4 0
3 years ago
The proper function of the cardiovascular system relies on blood following the correct pathway through the heart. Valves within
Nadya [2.5K]

Answer:

The Mitral/Bicuspid Valve

Explanation:

The heart is composed of 4 chambers: left and right atria, and left and right ventricles. The “right heart” (right atrium and ventricle) receives deoxygenated blood from the systemic circulation through the Vena Cava, and impels this blood towards the lungs through the Pulmonary Arteries where it will be oxygenated. The “left heart” (left atrium and left ventricle) receives oxygenated blood from the pulmonary circulation through the Pulmonary veins and impels this blood towards the systemic circulation through the Aorta artery.

The systemic and pulmonary circuits work in series, and maintaining the unidirectional course of the blood flow is very important. This can be done by the presence of fibrous valves that are present between the atrium and the ventricles, and in between the ventricles and the Pulmonary/Aorta artery.

The location of these structures are as follows:

Systemic circulation ⇒ Right Atrium → [Tricuspid Valve] → Right Ventricle → [Pulmonary Valve] → Pulmonary Artery ⇒ Pulmonary circulation

Pulmonary circulation ⇒ Left Atrium → [Mitral/Bicuspid Valve] → Left Ventricle → [Aortic Valve] → Aorta ⇒ Systemic circulation

3 0
2 years ago
Is the arrangement of vascular bundles in the stem same for all plant species?Explain
blsea [12.9K]

\huge\boxed{\fcolorbox{red}{yellow}{Answer:- }}

No, the arrangement of vascular bundles in the stem same for all plant species.

<h2>☆ <u>In</u><u> </u><u> Monocot </u><u> </u><u>Stems</u></h2>

In monocots, xylem and phloem are organized in vascular bundles scattered throughout the stem. As the plant grows, monocot stems generate new vascular bundles for the new tissue. Monocot stems in general possess a simpler arrangement than that found in dicots.

<h2>☆ <u>In Dicots</u><u> </u><u>Stems</u></h2>

Within the class of plants known as dicots, herbaceous dicots and woody dicots have different arrangements of vascular tissues. In herbaceous dicots (plants, mostly annuals, with soft, non-woody stems), vascular tissue remains in discrete bundles even at maturity. In contrast, when mature woody dicots (plants, mostly perennials, with woody stems) reach maturity, the vascular bundles join together to form continuous rings around the interior of the stem.

<h2><em><u>ThankYou</u></em><em><u> </u></em>✔✔</h2>

7 0
3 years ago
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