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riadik2000 [5.3K]
3 years ago
13

What produces egg and sperm cells during the life cycle of a plant?

Biology
1 answer:
andreev551 [17]3 years ago
4 0
Gametophyte

the haploid male (sperm) and female (egg) sex cells; in plants, formed by mitosis of haploid cells in the gametophyte.
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The species that is known as a robin in England has a yellow breast, and another species that is known as a robin in the United
inn [45]

Answer:

C. Different species can share the same common name.

Explanation:

These animals, though likely to belong to the same genus are clearly different species and have different phenotypes i.e yellow breast and red breast. They belong to different species and yet they are called a robin in both the United states of America and in England. That is why in science, the binary system is preferred to using common names

5 0
3 years ago
If alleles of two different genes assort independently during gamete formation then what should be the phenotypic ratio in the F
Pepsi [2]

Answer:

9:3:3:1

Explanation:

If alleles of two genes separate randomly during anaphase-I of meiosis, some new combinations of the alleles are formed in the gametes. A heterozygous genotype for two loci (let's support TtRr) produces a total of four types of gametes in 1:1:1:1 ratio (TR, Tr, tR, and tr). The random fusion of these gametes from two double heterozygous parents (TtRr x TtRr) gives a phenotype ratio of 9:3:3:1. Here, 9/16 F2 progeny exhibit dominant phenotype for both loci while 1/16 exhibits recessive phenotype for both the genes. Rest 3/16 and 3/16 F2 progeny express dominant trait for one gene and recessive for the other.

6 0
3 years ago
According to Darwin's theory of evolution, how do new species evolve?
Vikki [24]

Answer:

According to Darwin's theory of evolution, new species evolved as a result of natural selection.

Explanation:

  • Darwin proposed that speciation could readily occur through the prolonged action of Natural selection.
  • Natural selection allows the 'survival of the fittest' i.e. a more fit organism will have a better chance of survival than the less fit one.
  • The result of Natural selection could be positive,negative or balancing.
  • Evolutionary process in which the genetic changes confer a higher fitness to increase frequency of the organism over time in population is called positive selection.
  • Evolutionary process in which genetic changes decreases the organism's fitness resulting in its disappearance from the population is called Negative selection.
  • It may happen that a mutation benefits hetero-zygotes but not homo-zygotes and alleles maintain a intermediate frequency in population.This evolutionary process is called balancing selection.
8 0
3 years ago
Plant conduct which of the following processes
Finger [1]

Answer: hiii, the answer would be c. both

i hope this helps, have a nice day :)

Explanation:

4 0
3 years ago
Read 2 more answers
What is the purpose of crossing-over in meiosis
AveGali [126]

Answer: crossing over, process in genetics by which the two chromosomes of a homologous pair exchange equal segments with each other. Crossing over occurs in the first division of meiosis . At that stage each chromosome has replicated into two strands called sister chromatids.

6 0
3 years ago
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